Well it didn't do it until I changed the speedo pinion and cable. I made the change because I upgraded to an 8 3/4 rear with different gears and needed the new pinion, so I figured why not change the cable, the clip that held the cable to the back of the speedo was cracked and starting to break I'll have to check and make sure I got it on the back the way it should be I guess. I will try the drill tomorrow and see if I can isolate it.

It did not hang up previous to the change, that's what has me confused.