So i leave work the otherday and do a burnout out front. Shift hard into 2nd gear and then i notice a vibration. I get home a few minutes later and notice my pinion on my rear axle is sticking up at about a 60* angle I invertigate and assume its my blocks. the left rear tire was also about 4'' forward from its normal place. Well i fixed it temp by butting it in reverse and holding the gas and brakes....cool all set untill i get rid of the blocks. Go driving and in a normal acceleration the pinion shoots up again and some ridiculous angle(vibration was the DS hitting the yoke nuts) grrrr... so i do the reverse thing..... Now its pointing down about 30* !!!!!!!!! so i spend about 10 minutes messing with the brakes and gas and get it normal again....I go straight home and ground the truck. I noticed its drulling about gear oil and i look to see where... ....Its coming from the axle tubes pressed in Pins. Those 4 pins the are used to sucure the axel tube into the diff housing, well 3 are missing. It wasn't my blocks, its my diff house spinning around my axel tubes..lol So i whipp out the welder and after getting the tubes perfecly position in reference to eachother and the diff, i welled to tubes on and the 4 pressed in pins. WORKS...but i deffinatly need to find a 14 bolt now.