Suspension & Brakes - diagnose this problem! please??

well ive been noticing that since my LCA's and PHB my rearend tends to want to float or jump back and forth somewhat? Also a little chatter going on back there. And just recently gettin vibrations....not in the steering wheel but just noticing it mostly at around 2800-3000 rpms and after tc locks up at around 1000rpms. WTF is this?????? TIA guys

And FWIW its non-adj PHB and LCA's by UMI

What in the hell is the point of a non-adjustable PHB? :lol:

You might just want to check and make sure everything is tight. I had to re-tighten my PHB and LCA's after I drove it a month or so.