Try, Putting the tool in a strong and sturdy vice.Get an old frame with no headset, using spacers and bolts attach the tool through the headtube and tighten till the tool does'nt move. This way you will have a very good leverage system. Few drips of oil into the threads, then match the tool with the freewheel, and twist as hard as u can, maybe get a mate to help. (P.S. This is how my local bike shop does it, quite hard to explain!) cheers nafan