On my Am Std, i have the trem set to float, but biased to mostly dive - as in it'll only raise the pitch a small amount, for when i want a bit of shimmer. I have noticed that if i gently hit the bridge, to get the fast rise in pitch i need sometimes, the trem springs boing loudly, and go on rining for a while. Its not so noticeable when plugged in (but is there), but when i tried it raw, it boinged for ages - anyone else get this? 2 of the springs are black, leading me to believe they're after market. Any thoughts, hive mind?