[chomama1]

Thanks to all.

Yes, by sealed, I mean no zerks.

Does not "appear" to me to be enough of an angle anywhere to cause binding, but I could be wrong. The drive shaft itself is about a foot long, maybe.

Nothing appears worn or damaged and I do not abuse the drive line. Well, not much anyway. No smoking the tires or anything like that. Actually, the u joints and the driveline look almost new.

There's a suspension guy down the road, I'll have him look at it.