I would take a small brush and paint the splines with a good grade grease. Just a light coat and slide it in and out and coat it untill it slides freely. I think the coating may be teflon or something like it. I did that a lot on semi trucks and the drive lines never fell out or locked up. It needs to slip when the axle goes up and down.
ATTENTION: be sure to align the yokes correctly when you slide the shafts together so you don't get a vibration in the drive line.
If you have a carrier bearing you should have three Ujoints, you should have replaced all three. Does the original Ujoint have a zerk fitting to grease it? Did you grease it? If not keep and eye on it cause it will fail as the others did. I hope you got joints with zerks. The zerks go toward the center of the shaft, their easier to grease that way. Also, try to align them so you don't have to rotate the shaft to grease them.
Last edited by Ranger Carl; 12-24-2007 at 08:36 PM.