yes dogg your right,
the reason for the stock cam clearence as i understand is the cam profiles have "quieting ramps", and at the stock clearence because of the ramps you actually have none (no clearence) if that makes sense. im just grabbing at straws and have no intentions of anything but just starting it once i re-shim it closer.
however, you just thickened the mystery. seems someone else has traveled this road with the same result of the 904 kit. what eventually happened to fix his ride..??? did the bike return to stock components or was there another solution that presented itself. please continue story im at the end of my rope on this one.