crazygenius13
+1y
Most paint systems offer a plastic cleaning paste that us used for raw plastic bumpers and moldings, and for this type of job as well. It's made to strip the release mold agents off the plastic before paint. If scuffing the parts with the appropriate scotch brite and that sort of past, then cleaning the panel before paint with a good wax and grease remover, does not do the job... Then sweating the plastic may be needed.
I've ran into that problem a few times with OEM moldings, and we basically bake the part 1t 150* or more for 45 minutes, scuff like mentioned earlier, sweat again, scuffed again, cleaned, painted. Works everytime.