The shutters on my house are faded and ugly, and I'd like to repaint them. They are the plain old run of the mill plastic shutters. They are about 16 years old. Fall of 2011 I painted one as a test using Valspar Exterior paint, and it held up well and looks great. I'd like to repaint the rest of them before winter arrives, but I'm running out of time. I can climb a ladder, scrub them up, tape things off, and brush to my hearts content. However, I'd rather pull them off, scrub and powerwash, prime, and spray a nice coat on them. I assume I'll need to buy new plugs. My worry is that the new plugs won't hold the shutters in place in the old holes. My house has no exterior OSB sheathing, instead the cheap SOB's that built the place just put up blueboard and called it a day. Thoughts?