I am pretty strong so this is a real possibility, especially knowing what i can do to weak wheels... So what i am thinking is buying a modern alloy shell, removing the left hand ball ring, installing the FM one and building it into a new wheel. Any insights or suggestions are highly appreciated. I succesfully converted AW to AM but i do miss the low end.*I think that is why Sturmey made the FM and it was regarded to be the best club gear.