I'm wondering what you guys are using for paint on your parts? I've used Krylon rattle can as well as Rustoleum neither of which has held up worth a damn. I saw twisted toy's paint job here and would love to replicate that quality just in flat black instead.
I liked this question and remembered seeing a product advertised I think on hot rod garages you tube channel. It is made Eastwood and is a two part paint like what you would use in a sprayer. I haven't personally used it but i would suspect that it is tougher due to the hardeners in it.
http://www.eastwood.com/paints/2k-aero-spray-paints.html