Always on a straight-a-way and only under acceleration from 30ish to 40ish, once I shoot past 40, it all clears up. I'll definitely try the neutral approach. I look forward to spending the day tomorrow (no joke) with all the good advice. Once I try to do what I can by driving it and if nothing comes of it, I'll hopefully have time to get it in for a "road force balance." Cheers all!To isolate it you might want to see if it does it only under acceleration through that speed,at steady speed or if it does it slowing down. Also you can get it to do it and pop it in neutral and see if it quits ( being careful of course) that will let you know if it is a issue under load or not. I would find a safe place get It where it smooths out and decelerate in and out of gear and see If it shimmies.