Percy:

You could try this -
If you're satisfied with the Part A drums, go to the first bar of Part B, right click and select "Bar Settings".

On the left hand side of the window, there's a drop down for each instrument, including drums, where you can adjust the volume. Remember to change it back after the Part B.

This method won't help if it's just (say) the snare that you feel is too loud, but it will allow you to bring down the volume of all the drums.

The trouble (as I see it) with your suggestion, is that, there will be some people who think the volumes are fine. There's no way that PGMusic can record separate volumes to please everyone.

If I have a volume problem with RD, I take the whole file to RealBand, and try to tame the 'peaks' there.

Good luck!
LLOYD S