I got a used RG7620 recently, and I noticed this weird problem with the tremolo. When I push the whammy down, all the strings go floppy, except the high E. It stays tight, only tuned down to about a B. Any idea why this would happen? I tried searching around but couldn't find anything. I'm currently in the process of restringing it, but so far it doesn't look like that will do anything. Any help would be appreciated!