Axle refresh complete w/ new MM hubs. By the time I finished the axle rebuild I had stashed enough $ to have my driveline rebuilt w/spicer long travel slip yoke and new joints. On my first test drive I had a severe vibration and could hear a grinding noise when hubs were locked or I was in 4wd. After I got home I found that the noise was from the birf's rubbing on the outer knuckle. I had noticed that the MM inner hub gear was wider than the SW and beacause of this you couldn't use the axle clip retainer to keep the axles from moving in and out. MM instructions say to use they're cheasy grade 5 fender washer with lock-tite, but if you tightened the bolt down on the axle shaft it would take out you're wheel bearing preload and the wheel wouldn't turn. So I called MM, talked to 3 different people, gave them my info and never got an answer or a call back about my dillema(nice customer service!). After taking several measurements I deciced to have the MM inner gear machined down to the same thickness as the SW gear.