My driveshaft is locking up when I pivot around the ball and socket joint at the double cardon end. I try moving it in a small circular motion and it's ok, but once I try a larger radius of movement it starts jamming. This is a problem because I have a 4" lift and I feel the angle when installed on the car is about where it locks up. Anyway to grease or stop it from jamming?

 

replace it, to clean and repack it is just hideing&postponeing the inevitable/do it in your garage, it's ore fun than under a tree!

 

You might be going past the joints range of motion and have to invest in a high angle drive shaft.

 

I bought this from tom woods for that specific reason.. dang