I installed one of these on my truck 2 or 3 weeks ago, but unfortunately the clunking thru my steering wheel. Had a buddy start the truck and work the wheel back and forth while I watched the front end. I noticed over 1/8" of movement (deflection) in the track bar bushings, which I'm pretty sure are polyurethane. I've rechecked the mounting hardware, and everything is still tight, torqued to their specs. Is this normal? I didn't think a poly bushing would move that much.