I hate the fact that with a procomp 6" lift you can't drive in 4hi without putting in the aftermarket procomp front driveshaft. The problem is very noticeable. you can hear the shaft rubbing with the rotation. it sounds dangerous, therefore, i don't use 4hi above 20 mph. my question is, is there a way to fix this problem without buying a new driveshaft? $500 is an exspensive fix for something i rarely use.

can u snap some pics of what the shaft is rubbing on?

its not rubbing its vibrating.