I've got a new 50s Tele with a Bigsby, which I just restrung after changing the pickups. The Bigsby lever wants to raise up when the strings are tightened, and if it goes too far back it'll hit the back of the body and the strings will come off the posts. Am I doing something wrong? BTW, this is my first guitar equipped with a Bigsby, so I'm a noobie with this thing. Here's a pic of how I have it strung. This is not my Tele, but the pic is for demo purposes only.