Ranger Parallel 4-Link HELP!!!

I have a 97 Ranger fully bagged with a parallel 4-link. When I have the front all the way up and the rear pretty low the drive shaft is being crammed into the transmission and it makes a horrible grinding noise.But when i have the truck all the way up in the rear, its fine, it doesn't make any noise. I was wondering what bars to tighten or loosen to maybe adjust the way the axel is moving? Or if there's anything i could do myself to get rid of this noise and be able to ride fairly low in the rear. because driving all the way up sucks