hey guys, i need some help here. i've got a 95 f-350, reg cab long box 4x4. anyways, about a year ago the dual mass clutch was rattling, and i was busy with work so i had the local shadetree mechanic put a new single mass napa clutch in. drove the truck about 6 miles and the transfer case broke off the tranny, coming apart right in front of where it bolts up to the tranny. this happened at about 60 mph, and tranny, transfer case and drive shaft were destroyed. fast forward to now, i had just finished replacing all said broken parts, taking it for a drive down the road, this time made it about 2 miles down the road when the same freaking thing happened again!!! any idea what's going on??