Anyone that used dashcap please help

Nice day, decided to finally install the dash cap for my duster. Following the instructions. Test Fit. WAIT! It doesnt fit 100%! ](*,)

I knew they were not perfect but, it is showing some of the green dashpad on both sides. I read in a mopar magazine (old one where they put a cap on 69 satelite dash), that they used a hacksaw blade to take osme off the original material off the front edge of the dash pad.

Has anyone else done this? Im looking for some info how you installed your dashcap. Searched the forums, not coming up with much.