So about 2-3 weeks ago I got new wheels and a panhard bar was supposed to come with it, came a week later, but after I put the wheels on I've noticed a substantial amount of thuds/clunks when going over even the smallest bumps. When coming to a stop sometimes it feels like the rear axle is "skipping" so to say. The panhard bar is tight and nothing else is loose. Wheels are on properly and I can't figure out what it is. I haven't taken it to a mechanic yet. Just thought I'd ask here first and see if it was an easy fix or not. As always suggestions are appreciated!