Can someone please give me some advice. The original silver paint has started to wear off the top of my heads. I purchased a can of the silver bead blast paint in the rattle can from the hd dealership. I prepped and cleaned the heads and area I would be painting with acetone and cleaned everything very well. I sprayed thin coats and repeated and let the paint dry for a couple days. The paint appeared to be dry and cured but when I started up my bike and got it to running temp. the paint got soft and bubbled up. I thought I may have gotten a bad can of paint so I bought a new can and repeated the steps but still the same results. Am I missing something? Do I need to shake the can more? Any suggestions would be appreciated!