Oldtimer2: I could have made the adapter, too butt up to the flywheel or the hub I cut down. The problem is I sent away for taps and they were all oversize. So I gave up. Seems like other guys doing the left hand threaded engine could make one for you. At this point I wonder just how tight there threads was. Mayby the taper and a set screw plus a lot of locktite was there answer. Best Regards Capt,n