OK, this is driving me absolutely crazy here. I recently slapped a new set of strings on my seven. The gauges were 9-46 with a 60 for the low B, and the tuning was Bb. At the same time I took to opportunity to adjust the springs on the floyd rose a little, as it was lying a bit too low for me. I've got two springs and a tremel-no in there. Problem is, the tuning stability has been shot to pieces since then, and I've never once had that problem with this guitar, or these strings (D'addadios, in the gauges I've been using for ages now). Every time I leave the guitar for a bit, or do any sort of big bed with the trem, the strings go drastically sharp, frequently as much as a semitone. It's especially problematic on the G string for some reason. I've checked all the obvious things. I've stretched the strings in several times now, made sure the nut is clamped properly, and that the strings are all wound evenly round the machine heads. Can anyone suggest what the problem might be, as this is driving me insane? It's rendering the guitar pretty much unplayable at the moment.