How do you keep the darn thing from lifting? I've got 5 new springs in it and I can't seem to keep it from lifting and pulling away from the from the guitar as I try to tune it. The strings keep getting farther and farther from the neck. It's an older model which was retrofitted on a strat shaped body. I'm a new floyd user and this is very frustrating. When I got the guitar it was great. No problems. But when I restrung it it has never been the same.