I have used KBS diamond clear aerosol over MonoKote with no problems. It has been on for over 5 years, no peeling or yellowing. The best process I have found is to start by cleaning the surface with degreaser, scuff with 600 ish paper, clean again. Apply a light dust coat then light wet, don't over do it. You can do a test panel pretty easy by taking a piece of cardboard say 6"x 6" and cover with scrap MonoKote then test. You will get a feel for it pretty fast.
Best, DennisT