I recently tore up my prop,I ordered new prop from iboats,as per my specs,I recieved prop,part number 56-072107.everything looked right,it had correct splines,correct pitch.when I went to install, I couldn't get prop to go on all the way.I compared it to my old prop and noticed ,that the inside hub of new prop is thicker than my origanal,because of this,it won't allow new prop to go by the shafts bushing.without the bushing new prop goes on too far and rubs on anode.does anyone run across This? Any help would be greatly appreciated.no more boat until I find the right prop,or rebuild my old one, for the third time