Aloha nui loa, i'm sure this has been answered before but didn't see anything in the archives so: My'51 is slowly leaking gear oil from the tranny, down the torque tube and into the rear end, I've just gone on a schedule of draining the rr end and re-filling the trans, someone mentioned the fix, some kind of bushing(?) with a funny name, and said it wasn't easy and if it has been done once already your kinda dead in the water. Any help and/or suggestions? Many Mahalo's