I havent been on here for a few days...but what I read above scares me.
DO NOT NOT NOT use brake CLEANER on plastics (unless you 100% know its plastic safe! most are NOT) I said brake FLUID. Brake cleaner dries out the plastic usually making it brittle, and then it can shatter under any kind of flex. Brake fluid is an oil, and i have yet to see it harm a piece of plastic.