I wanted to add my unique perspective here to the pitch problems on the new trems. As I work in engineering, I'd be interested to know exactly the physics and mechanics involved in peoples assumption that the problem is with the "locking" aspect of the studs themselves. I'm not discounting anything. I'm just curious and maybe the answer is right there in front of my face and i dont see. That does happen to me a lot. The facts are these. A non locked threaded stud whether it be screwed into an insert or direct mounted to the wood is not going to move significantly enough after small amounts of playing time to cause the problems that have been mentioned. Yes, over time, certain forces will possibly cause rotation of the stud namely vibrations from constant fluttering and assorted other wammy tricks. This would be a prolonged process and would have no bearing on the tremolo unit returning to pitch properly after only a few uses. In my educated opinion, since the locking aspect (rotation factor) of the studs is whats being blamed here, I'd say that assumption could be very incorrect. There could be a thousand different reasons why there are problems with this new trem. Until a thorough investigation is undertaken and documentation issued by ibanez, I would not encourage anyone to try to make up fixes for the problem. While they may stop the problem for the short term, these unengineered solutions may not work out so well in the long run.The new unit is a high precision device that probably was modeled in a computer using advanced engineering software. Every piece is probably manufactured to a tolerance of .001 inches. or even tighter depending on the application. One manufacturing defect not caught could possibly be the problem. I heard that putting the old studs in place of the new studs fixes the problem. Since the new trem is balanced differently, the old studs may not handle the particular forces that the new trem exerts. This could lead to premature wear on either studs or knife edges. But....since the old studs seem to be a fix then maybe its not the locking factor but the actual shape and design of the old studs as opposed to the new ones. If it were me, I'd wait before trying any fixes, even if it meant forgoing the new ibanez for another year. Engineering has its hiccups more often than not. Just my take on the situation.