It is my understanding the 800 HO has VForce (like) reeds from the factory, and it has 5/16 reed spacers. If these reed spacers are necessary on the 800HO why don't I need them on my 01 700 with VForce reeds? The VForce part number is the same for the REV and Non REV series III big block 600 - 800 motors. If Ski Doo is putting reed spacers in with VForce like reeds they must see a need for port clearence and are not too worried about crankcase volume. I already have the VForce reeds and a set of Fett bros 1/4 spacers