Thanks Andy. I guess if the heads were originally anodized by the factory them should work fine, yes?

I have a used OS Max .60 Goldhead that the previous owner cleaned too well. I didn't even know it was a Goldhead until I disassembled it and saw the underside of the head.

Here's what it's supposed to look like. This is av8rsodt's engine that I cleaned and restored for him.

I know this isn't 1/2A, but the people here know about all this stuff, like anodizing, etc. There's probably more modeling knowledge here than anywhere else on RCU.

David