Try opening the piano roll, zooming in (mouse wheel) and then you can identify the "soft" notes (vertical lines in the lower panel). Hover over the top of the note in the lower pane with the mouse until you get the double vertical arrow and you can then drag it up to increase the volume of that note.
Hope this helps!
Keep on trackin'
TrevorWebsiteFaceBookOfficial OFC™ MemberWin 10 64 bit; MX8 Pro; Intel quad core i-5; 3.0 GHz; 16 GB RAMI started out with nothing - and still have most of it left! - Seasick Steve