Unwanted interaction between tom and bass track

Hi guys,
Recording a song with a heavy tom-tom beat. Using Superior Drummer, just racktoms 1 and 2, snare, kick. I used the envelope control to trim back a bit of resonance on the toms, to clean it up a bit. No EQ on the toms. They sound good and tight on the drum track.  When I add the bass track to the mix, there is an interaction between the toms and bass track, the result being a sort of warble or random fast very uneven vibrato (best way I can think of to describe it) to the bass track.  Some sort of audible distortion. Each track on their own sound fine. Together, there is some conflict. 
I've tried to use the EQ 64 that's in Sonar, trimmed Bass track frequencies all over the place, notching everywhere I can think of, but still can't seem to find the problem frequency. 
Why is this happening ?   I've played around alot with EZDrummer before, done several songs, and never seemed to run across this issue.  This same song seems to work fine with EZDrummer.  The toms do sound fatter and fuller and more real on Supererior Drummer, though. 
What's the fix ?

That would be my guess as well and is a good example of why tuning of percussive instruments can make or break a song.

The TS-64 transient shaper is your friend for the toms. Accent the attack, and use the weight control to damp the ring/resonance. Only problem is the TS-64 has look-ahead, so there will be a significant increase in latency. Best to copy the tom track, mute the original track, process the copy, then render it. If it's not right, you can always go back to the original and try again.

OK, thanks for the input...  hmmm....   I'm building the song up from drum and bass tracks...  if the bass and drum tracks sound good by themselves, would you proceed with the rest of the song, counting on the idea that the interaction will be sorted out at a later date / mastering / someone better equipped to handle this sort of thing? I'm not familiar with mastering yet, so I dunno.  Or should I keep working at it till it sounds right before proceeding ?  Sort of reluctant to freeze/bounce the whole drum kit, tweak it to perfection via eq and plugins, then realize later that I wanted a change in the drums and have to do the whole thing all over again...   ?

It's the sum of it's parts. If the parts are conflicting, you should address them. If you like the shape of the toms, then tuning them may help, if you like the tuning, then re-shaping may help. Maybe a touch of both.

You could side-chain it. Personally I'd prefer tuning the Tom. What key is your song in?

Ok, well it would be helpful to find the EXACT resonant frequency of your tom (it's probably not precisely 100Hz) and tune it to the nearest Eb or Bb.

Maybe throw the to,s into melodyne to see how they sit with frequencies

Chevy
OK, thanks for the input...  hmmm....   I'm building the song up from drum and bass tracks...  if the bass and drum tracks sound good by themselves, would you proceed with the rest of the song, counting on the idea that the interaction will be sorted out at a later date / mastering / someone better equipped to handle this sort of thing? I'm not familiar with mastering yet, so I dunno.  Or should I keep working at it till it sounds right before proceeding ?  Sort of reluctant to freeze/bounce the whole drum kit, tweak it to perfection via eq and plugins, then realize later that I wanted a change in the drums and have to do the whole thing all over again...   ?

There is no need to worry about this.
 
If you freeze your drum synth you can unfreeze the whole thing with one click, make your edits & freeze again.
 
Just make sure when you do your initial freeze you DON'T include your Fx when freezing.