89 yj w/ax15 (NEW) NP231 (REBUILT), hpD30 front w/ new carrier & 4:56 gears and bearings, d35 w/New carrier and 4:56 gears and new bearings, posi lock delete w/ collar locked to axles. my problem is in 4low 1st gear I get horrible ratcheting noise that disconnects power to front axle. Sounds...