clicking sound on pull-up
This is a little weird, but _sometimes_ when I pull up on my trem, I hear a metallic clicking sound. The reason it's weird is that it's not all the time. It seems like it's only when I first pick up the guitar. after working the whammy bar for a while, the sound goes away. But I don't know what's causing it, because I'm pretty sure the only contact between the bridge and the guitar is at the contact points between the knives and the posts.
Has anybody else has this before? it's pretty annoying to have to do a bunch of pull-ups every time I pick up the guitar to get rid of that metallic click.