that is good advice, but yes, I have already replaced the u-joints with greasable and had it rebalanced as well.
I cannot see any excessive wear on the SY so I do find it hard to believe, however my problem is still there and with u-joints replaced and gearing checked it's the next logical step.
Plus the jeep dealer has says that's what it is too - they won't replace it under warrenty because I have "tampared" with the driveshaft (u-joints are wearable items they wouldn't of replaced anyway) plus my vechile is modified i.e. lift.... and yeah, they wouldn't replace the pinion bearing either.
