Rotate the carb 180 degrees, drill the G10 through to the pulse hole in the cylinder...Put the carb gasket on the G10, mark the pulse location that's now at the back...drill a 3/32 hole about 1/8 deep at that localtion..connect to the through hole with a 1/16 wide passageway about 1/16 deep...There's enough room if you don't make the passage too wide..All mine are made that way, saves making intersection holes, takes only a few minutes with a Dremel and a 1/16 ball tood....Go slow, it tends to wander....