I just switched to a 8.8, and after connecting the driveline to the flange, the driveline is compressed all the way. Is this okay? Other information: it has a slip yoke eliminator and Jeep is still jacked up off the ground. I think I should have about 3 inches of travel in or out to allow diff to go up & down, but that means shortening the driveline. Does that sound correct?