Sorry, once you get to know Big Al you will learn not to take his posts too seriously. Re posative stop gearbox, it means that the arm that actuates the gear change is pushed forward , the gear changes and then the lever returns to its original position, you can only move through the box one gear after the other by repeating the action. The 11E gearbox is sequenial, the lever selects a different gear dependant on the position it is left in , it doesnt return to its original position, these gearshifts usualy have some kind of gate to show which gear its in. The disadvantage is that its possible to accidently go through more gears than you intended when changing. Does that make any sense? I have seen 11E engines in scootacars.