Anyone have experience using Precision brand U-Joints?

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I have experience with the Super Strength U-joints. I thought they would be a perfect match for my '76 Blazer with a 4 speed and mildly built 350. It also has a 4" lift and 33's.
The first time one broke I was accelerating hard in 1st and it went at about 2800 RPM. It destroyed the T-case output yoke and the slip portion of the shaft. When I disassembled everything I noticed a centering tab missing on the T-case yoke and thought the U-joint had slipped out of position. I replaced the U-joint and yoke thinking everything would be okay this time.
The next time it happened I was entering an intersection and shifted from 2nd to 3rd under normal acceleration. I was going about 10 MPH and the shaft left the vehicle completely this time. The front joint broke the exact same way(broke off one race) and the rear joint split in half when the front of the shaft hit the pavement.
Both times the joints broke before I had 100 miles on them. I went to the parts store and got my money back for the joints and told the clerk what happened. He told me to submit a labor claim and I did for the total of the yoke and shaft I had purchased. I just received the check and won't be wasting my money on cheap parts store U-joints ever again.

These joints are complete crap even with the unlimited lifetime warranty. Something tells me BigHoss either works for the company that makes/imports these things (there is no way something this terrible is made in the US) or he has stock in it.
 
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