I've powdercoated well over 100 sets of cams/pockets for pretty much all bows, including Hoyt, which has the tightest tolerances, and have had no clearance issues. Of course, when I do a set of pockets/cams, I always check for a good fit and finish before returning the parts. Powdercoat also hides surface flaws better, such as tooling marks, and is available in 100,000's of color combinations. Unless there are some REALLY horrible powdercoaters out there, it should not build up in the string grooves. Actually, due to the Faraday Cage Effect, the powder is actually slightly thinner in the string grooves. Plus, it's less expensive. Bottom line...there is nothing wrong with powdercoating/dipping cams. Not that there is anything wrong with anodizing.