quick background: installed Damond passenger side mount and trans mount. already had a stage 2 cpe rmm. did a few other bolt-on mods (downpipe and tmic). i'm now hopefully finishing up some tuning with Hypnotic. this was all done 473 miles ago. have been noticing in the last few days that there is this odd vibration around 2,500 rpms no matter what gear i'm in. 6th gear is much less noticable. the vibration stops if i press in the clutch and the rpms drop. it goes back to normal. anything above that and it pretty much goes away as well. i thought it was some tire issue as my tires are getting low treadlife and i'm about to replace them. they do drone around 70 mph, but this isn't that. so i retorqued the motor mount bolts (was about time to do it anyways). the passenger side might have needed it a tiny bit. the trans mount bolts, however, were still solid at 40 ft lbs. i couldn't do the main bolt (70 ft lbs) since it's blocked by the plate. Anyone have any idears or other things to check before i drive it again? shifting seems fine and i don't hear anything. i feel that vibration thought hot and heavy in the seat. i know that these mounts can add quite a bit of vibration but this wasn't there initially.