Hey all, I have a 2000 TJ Sahara with 35s, 4.88s and eaton e lockers, 4" lift with currie springs, metal cloak trackbars, metal cloakdouble adjustable control arms, and currie correctlink tierods and draglink. Most importantly with a Teracon SYE kit and a Tom Woods double cardan driveshaft. I have the proper geometry for a CV driveshaft (0 angle between driveshaft and rear axle). I've been struggling with an oscillating vibration that just seems consitent with improper driveshaft geometry. It is noticable from 40 mph + for like the last 5 or 6 years now. I've toyed again and again with slight adjustments to the control arms thinking maybe the driftshaft to axle angle was +or- 2-3 degrees off or that there is some slight upward motion of the rear diff when accelerating but nothing seems to work. Was toying with the idea of a dropping the transfer case an inch or two to see if that helps but that seems unnecessary considering my setup should be fine. Anyone have any ideas what could be going on here? I've tried much more too. I've exhausted all my options and spent