Ya I like a blocked trem, I go back and forth between blocked and floating depending on how stratty I feel like playing. Good call though I feel like something weird is happening there like you said. Burr, etc... something, but I can't find anything. I will say the one thing that seemed to help was pieces of paper in the saddle grooves, that calmed the notes down. However, the new saddles didn't help, but I'm getting warmer. If I had extra bridges and necks to swap around I'd do it, and I think that would narrow down the problem.