Replacing U-joint
lifetime warranty is good and all but i would get one with a grease zerk. Autozone has them as well but I believe the warranty is only a 2 year warranty. I'll change them before the warranty is up as long as i can grease them while under the truck.
You put them in wrong. Well, not wrong but in the wrong position. You may try taking it back out and rotating the whole joint around 90 degrees.

