Umm... ok, guess I misunderstood the question. Honestly, though, when set up right I don't have to tune my Floyds any more often than my string-through guitar.

If it's a new guitar, you might want to think about seeing if you can work a trade or something. Schecter makes some nice string-through models in the same range. I don't know if you'll ever be able to get the Floyd to a point where you're satisfied with it.