If you record midi, as either GM or "Full" it makes a bunch of duplicate notes.  For instance, in the last 3 minute song, undupe.cal identified 956 duplicate notes.  What is with that behavior?  I can't find anything that is set up wrong.  It is impossible to edit the drum pattern when nearly every note has another note underneath it!!
 

That's most likely a problem with your MIDI controller. Are you using a keyboard, e-drums, or MIDI guitar/guitar synth?
 
If it's a keyboard controller, try using its transpose feature to shift the MIDI notes up or down an octave so that you can play on different keys. Sometimes one or more keys can develop a flaky connection or key bounce, especially if you hit a small number of keys very frequently, such as programming drum patterns.

Strike has unusual mapping and channel routing. If you load a preset from Settings tab, beside a kit you will also load rhythm patterns, effects settings, that is, basically everything Strike has to offer.
Reading the manual should help.
Here is a useful table on channel routing:
 

It seems I need to better explain what is going on:
 
I identify a Preset I can live with.  I then insert a midi track set to Channel 1 (patterns) and add notes at each measure representing the desired pattern at the measure.  Turning 'Latch' on and playing the song sounds OK.  I then arm the 'Record Export', set it to Midi, and play the song all the way through.  I then drag and drop the 'recording' to a new midi channel set to channel 2.  I mute the previously employed midi track set to Channel 1, and play the song through.  Sounds just like it did before. 
 
However, no preset pattern is going to exactly synch with the bass line, etc
 
Now, when I open a Piano Roll and drag any note where it is supposed to be to synch with bass line, voila, there is another midi note underneath the one I just moved!!  Growing tired of dealing with this horsesh**, I ran undupe.cal and found over 900 duplicates.
 
Unless I am doing something wrong (unlikely at this juncture), Strike is unusable ... unless you just want to use it 'out of the box'.

I see. I believe it's the way their MIDI patterns are programmed so it is possible to adjust hit variations. Looks like you would need to drag select notes you want to move and then nudge them left or right.

I have Strike 2, and it has a cool virtual drumming engine, with a lot of potential.  Lot's of creative fun!
 
However, I have seen some very bizarre stuff with Strike 2 as far as recording MIDI patterns with the plugin and then dragging them out into a DAW timeline.  Like including extra bars at beginning or end of the pattern, depending on the DAW you are using.  So the clip ends up not being the length that you recorded.  I think there is a major bug in the program, and there are a few forum comments here and elsewhere about this. 
 
https://vi-control.net/community/threads/anyone-used-strike-2.48452/#post-3894862
 
http://community.airmusic...-in-midi-from-recorder
 
http://duc.avid.com/showthread.php?t=376333
 
http://forum.cakewalk.com/Strike-Drum-Module-from-AIR-Music-anyone-else-have-this-m3532365.aspx
 
So this feature is in doubt:  MIDI export for quickly creating drum loops and MIDI sequences in your DAW
 
I gave up trying to export MIDI from Strike.  If you like Strike's drumming, and it is cool, recommend focus on using the audio multi output capability and just recording the kit onto audio tracks 
 
Else if MIDI export is really important just use another program, like EZDrummer or Addictive Drums, etc.  You can even drag MIDI patterns out of Session Drummer or Studio Instruments.

abacab ---> I agree that it "seems to be" a cool program, but the odds that any drum program is going to mesh with any song is practically zero.  So dumping to audio tracks is not a true option.  There is no way a drum program of any type is going to accent the bit where the guitar player went to the top of his emotional level, like a REAL drummer would. 
 
soundwise --->  Methinks that putting 900+ duplicate notes in there is not as good a plan as simply varying the velocity.  That was stupid.  Vary the velocity and make the note locations a bit more random is the proper approach.
 
I will never use that plugin again!!  What a mess to clean up!!!
 
I'm pretty sure you could accomplish the same thing that Strike does --poorly-- via Cakewalk Quantize and offset a little ahead or laid back, with a touch of random.  Same with velocity.  I am glad Strike was free.
 
An even better approach methinks is to simply buy some midi packs of a real drummer and use and/or edit those.  Also you can take the hi-hat work off of one midi file (by deleting everything else), and the snare from another, kick from another, and cobble something entirely new PLAYED BY A REAL DRUMMER on all the REAL DRUMS in AD2.
 

GregGraves
 
An even better approach methinks is to simply buy some midi packs of a real drummer and use and/or edit those.  Also you can take the hi-hat work off of one midi file (by deleting everything else), and the snare from another, kick from another, and cobble something entirely new PLAYED BY A REAL DRUMMER on all the REAL DRUMS in AD2.
 

I like AD2.  The MIDIpaks seem to have a real feel to them, if you can find the pattern close to what you need.  Since you can always drag them into your MIDI tracks and edit to fit, you are good to go.
 
I think something like Strike is interesting to 'tickle the muse', but not as a serious tool for songwriting due to the shortcomings it has.
 
I was also impressed when I saw the video tutorials for EZDrummer 2, with the 'tap to find' feature to filter your groove from the available MIDI patterns.  That looks to speed up the search by filtering out patterns that obviously do not fit your song.  Plus the mix and match options for song arrangement seem to be very useful.
 
EZdrummer 2 - Complete drum track in minutes 
https://www.youtube.com/watch?v=2qF7QmVtVkQ
 
EZdrummer 2 - Tutorial
https://www.youtube.com/watch?v=JnQN3cX4Csc

EZDrummer seems interesting.  Tap to find?  Great idea.

GregGraves
EZDrummer seems interesting.  Tap to find?  Great idea.

Yup,  been waiting for over a year, but it never seems to go on sale...