RE: Clutch hub removal
They make a puller for HD clutch hubs. Yours is probably frozen on. Generally they can be gotten off by putting pressure on the puller, then whacking the center bolt with a hammer, putting a little more pressure, whacking, etc. Unless it's completely rusted/galled to the shaft, it'll suddenly pop off and scare the crap outten ya. Some heat might help, but be careful not to ruin the temper of the shaft.