As written, split the track.

Then bounce to tracks to get the audio clip, and add a volume envelope. This way you can make non-destructive adjustments.

You can create the envelope by writing fader adjustments with mouse or control surface.

Then if ya wanna you can edit the midi, if velocity affects the sound (layers).

Jm, I didn't quite understand that. What good would editing the midi do if you already bounced the tracks to audio? If I bounce the tracks to audio I could just use volume sliders to do what I want but I was trying to do this without bouncing to audio.

For a good sounding approximation you could just use a tilt eq like the softube (tonelux- love it !) or i believe bootsy has a free one and plugin alliance has an elysia tilt eq that is also free.

I mean Your actual right and left hand. I don't want to spread them I just want instant control over the balance of the two. Sounds easy right?. I recorded a midi track and the right hand notes got a little loud.
What good would editing the midi do if you already bounced the tracks to audio

The channel tools can do this with ease. It wont spread it, if you don't set it up that way. You control what it does, it doesn't control you.
 
Just insert the channel tools on the audio track and adjust the left or/and right volume knobs and it will raise or/and lower the left and right channels.
 
It doesn't get any easier than this
 
Cj

There is a difference between channels and hands.

You have sound of your right hand on both channels and sound from your left hand on both channels. Reducing volume of a channel is not the same as reducing the loudness of a hand playing a piano. That's like trying to change volume of only the lower strings of a guitar by twiddling channel volumes.

CJ's suggestion is obviously quicker.  But I infer you think the overall is uneven.

So, I suggested bouncing because it is easier to see the offending bits (peaks, valleys).

Then the midi could be adjusted for just the notes you are sure you want to change, if you wanna.

Also, you can use other piano patches and copy the volume envelope the new synth's output track, if you decide not to change the midi.

And then do what CJ says to provide more happiness.



 

  CJ, I am not trying to adjust left and right channels. I am trying to adjust right and left HANDS. You know like what the right hand plays on one set of volumes and what the left plays on the other volume. Unless something else comes up, the best way seems to be opening 2 true pianos and dividing the midi track in two tracks. Seems there is no way to have one midi track into true pianos and split the volume between hands (not channels)on track sliders. You can do all this wild crazy amazing stuff with X2 but something simple like this prevents me from doing what I want. It's mostly just my luck. Doctors can put faces on people without one, new eyes,limbs,livers,kidneys etc. but when I go to the doctors about my ankle they all say nothing can be done. My Luck.

yeah xxx, i get ya.  the other options don't really work out like that because there would be serious automation involved adjusting eq or channel tools as the left and right hands move up and down the keyboard.  it's feasible if they're playing an octave or so away from each other and the split in the piano range is consistent but when you get them both playing in the c0 octave and then left hand jumps one octave and the right jumps three then back down 1 and the left hand comes up one and ARRRGGGHHHHHH!!! just thinking about automating all that for a tilt eq and channel splitting makes me crazy!! 
Two plugs = best solution for true pianos.  the only thing you really miss out on is the symathetic resonance of the strings when you play the same plug with both hands, so the tonal quality is going to be different... it will sound like 2 pianos are being played not just one.

Maybe I don't get correctly what he means, but to my understanding CJ's suggestion assumes that lower notes (left hand) are more prominent on one channel and higher notes (right hand) on the other. You already mentioned in a previous post that this is usually not the case. The room image of a piano usually comes from room mics which will feature low and high keys pretty much equally in each mic. Thus changing channel volumes of a stereo piano won't do the trick, it will just attenuate one side of the room information, but not low or high keys. 

You do find piano libraries which spread low to high keys across the stereo image, but that has to be subtle to make sense. If overdone to the point where CJ's suggestion works sufficiently it will sound awkward. Even if you are dealing with one of those, you'll find most of the piano key range pretty much right in the middle of the image and if both hands are playing close together they will also be close together in the stereo image.

EDIT: oops, I guess I shouldn't post while having my coffee - I was replying to jm24, it feels redundant now that some other posts already cleared things.

Yep, if you use a plug with sympathetic resonance, distributing to two plugs is not ideal, moreso if you play with much sustain pedal usage. I'd opt for note velocity editing, personally.

the only vst that i could recommend that might be capable of achieving this to a certain degree would be pianoteq4.  various micing options with automation might be able to pull it off.