i wouldnt take a dremal to the steering shaft, if anything take a good ol hammer and slightly modify(read beat in) one of the primaries that touches the steering shaft, if any. When i had shorties on the 302 i didnt have any problems with the shaft really. I would much rather lose a pony or to than weaken the steering shaft by making it thinnner in one area. It really might not break, but i would rather not worry about it at all.