Thanks bugerdup. You rotated 90 degrees? As delivered and looking from the prop end, my starter socket is on the right, the crankcase vent on the bottom, carb on the bottom and exhaust on the left. So presumably your exhaust is now on the bottom?

On the RCV website some pics show the crankcase vent on the bottom and some show it on the side. With it on side I guess it would act a bit like a sump overflow.