Well it truns out it wasn't the pinion bearings. The left side axle was rubbing the carrier where it went through it to slide into the spider gear. New axles last year, must not have been machined quite right! Put the bearings in anyway. Pretty sure they are original as far as I know of 236,000 plus miles. New axle seals too, new inner spindle bearings, and repack the wheel bearings! Working on the rear now, one axle seal was leaking. Did them both, plus new e brake cables. Also did front, and rear output shaft seals in the t case, new oil in the trans too. Also a pair of front shocks with coil over springs on them.