im painting mine sometimes this week, what steps were involved, like did you use different kinds of sand paper? Will that grey paint sealer in a rattle can work, thought it might because its just plastic. I cant really remember but i think the grill is smooth already so did you even need to use any sand paper?
I think he is referring to using a solvent to prep. Typically you use a wax and grease remover to get rid of contaminates (sp) before you start sanding (so you dont grind them into the plastic), then you sand, then clean with the wax and grease remover again before you paint. Again, this helps eliminate contaminates from ruining all your work.