My 208 t case is in big trouble. I've had a bad vibration coming from under my truck. I rebuilt my 700r4 and bought a REBUILT t case from the paper. Anyway I've replaced both u joints the rear pinion yoke and now the vibration is worse. I went to shake the driveshaft to check for play and I burnt my hand! The tail shaft on the tcase and the slip joint were too hot to touch. I thought it was the catalytic convertor causing it but the heat shield wasnt as hot as the slip joint and t case. Any ideas? This is driving me nuts. The drive shaft is in balance.