I am in the process of prepping the interior of a closet for painting. The existing paint on there now is oil based and probably put on sometime in the '70s (although I'm not positive of exactly when). Anyway, there were some areas where it was scraped off a bit (I think where clothes would rub against it). When I went to sand/degloss I found that some of the paint will flake off under not mush pressure; however, it's not peeling at all. I have attached pics to see what I'm talking about; I think that is primer beneath the paint, but I'm not positive. My question is, can I wash with TSP and then prime at this point? Or will it all be for not, and the paint will start to peel or flake eventually? If it's not ready to prime at this point, what are my options? Also, I attached another pic of some of the trim. I sanded this down a bit, and plan to wash with TSP and then prime. What do you think, is it ready for that? Thanks a lot for your help!