Recently I bought an Xd on the cheap and it works great gotta say I really love shooting it... I'll save that for a glock vs. xd thread. Anyway the drawback is that the finish is worn and has alot of tarnish. I've been searching around and I guess it's this finish called tenefir. Not sure if that's right but the finish doesn't hold up at all and it seems to be a common problem. I want to put gun-kote on it. I've never really done anything like that before but I have all the right equipment.My question is will the gun-kote adhere to the finish and not flake off is there any prep that i should do the gun like sandblast/degrease it?