adhesion

hi guys, I'm painting some interior parts for a 2002 Ford Think electric car. The parts are grey PP textured plastic. I washed them with dish liquid and water, and some Scuff Stuff on a grey pad, but I'm worried that I didn't really scuff down in every spot since they're so textured. Should I...

HI Guys, I'm painting some fender flares for a friend which looked like a cut and dry job, scuff and shoot...but when I hit them with compressed air I'm literally blowing the paint off. I'm assuming no adhesion promoter was used or just lack of a good scuffing prior. I blew maybe 60 percent of...