Ok so i want to paint my valve cover but it has some ****ty black paint on it right now, what is the best and easy way to get the old paint off. And also what exactly is the best way of preping it to paint it, I am using a spray gun to paint it with with some car paint that i have, but i wanted to make sure i got all of the old paint off so when i paint it it all loos smoot, reps to whoever halps me out, thanks