A little 'sidenote' here
In general, "bouncing" within a DAW should be avoided.
Without going into the technical details / reasons why, try a different way and compare this to an internally bounced file .... you will most likely hear a sonic difference.
Instead of bouncing, try the following:
-create a new stereo track
-set the output of the tracks you wish to bounce to a new stereo bus.
-set the input of the new stereo track to the selected bus
-now record the selected tracks onto the new bus.
After this, disable the tracks you busses (remove the output) and store them in your playlist .... don't delete them as you might want to make changes later.
Also, make sure your new bussed stereo track in in allignment.
For drum tracks, allign the new track to your old snare track by emlifying the wav forms to samples and manually allign the new stereo track.