Sounded like the drive chains where jumping today so i went to tighten them, right front wheel bearings are gone. Worked on it till my back said stop then called in a younger back to help, so with 2 of us saying really bad things about the engineer that designed this thing we finally got it apart. Phone call to Rocky Mountain Equip tomorrow and see how long parts will take to get here. Shouldn't be anything special, i hope.