i am looking to purchase the tusk axle,i noticed it said something about needing a axle nut wrench(from tusk) to tighten the tusk axle nut's on..my question is,is the wrench for the tusk axle nut the same size as the stock axle nut?or do i have to buy two different wrenches?also should i maybe just change the carrier bearings while in there also?if so should i buy the bearing removing tool also and just do it all fresh for peace of mind?