New to this forum. I'm learning so pls forgive the neophyte in me. My '05 XLR hops over bumps here in NY (where we hope to some day have roads as good as the Oregon Trail in 1835). Sometimes at highway speeds, even on a straight, when encountering a moderate bump, the rear end will hop to the right. In a moderate left turn especially, again at highway speeds, the hop is more of a jump. It feels like the rear end jumps two or three inches (that's only a guess based on how it feels). I replaced all 4 mag shocks with OEM mags. Tires are Goodyear Eagle RSAs (P235/50ZR18) (not run flats) at 34 PSI with about 27k on them. I've read that a lot of folks have added the rear sway bar to improve handling but it isn't clear (from the threads I've read) exactly what improvement in handling occurs with that mod. Is spring tensioning a possible factor here? Call me confused.