I have an R180 and need to remove the quaife from it to go in another diff. I have stripped the R200 before, which is really easy, but I'm struggling to get the diff out of the R180 case. It just doesn't seam to fit out of the back. The side covers are removed and I've taken one of the side bearings off to give me more room the turn the unit but there just doesn't seam to be enough space for the unit to come out!! Please help as I'm now considering cutting the case in half with a grinder.