i lowered my 99 2 door tahoe with a ground force 4" flip kit. now when i take off real fast or when i hit a good size bump, the drive shaft rubs slightly. would i be able to use a pinion kit to put a steeper pitch on the shaft so it wont rub without stressing the ujoints.

 

I went with 4* shims and It helped but I still have some vibration under load. Was thinking of balancing the shaft and hooping it too.

 

i don't have any vibration, i just need to chage the pitch of my shaft. i need to know if i can do that without destroying anything.