Anyone here have any good techniques for making cheap tuners work better? I have done all of the tightening, chnged strings, and the damned thing (my LTD EC256) still won't hold tune. It has the standard LTD tuners (non locking), and I would hate to pay a ton to upgrade. Yes, I have considered the possibility it is the nut, but my source does not have any in stock, and ordering off eBay triples (!) the price.