Crankcase Conundrum

Indeed. I don't see that much can be done without some pretty radical work

After much deliberation I have modified the crankcase to use the rear pick up hole as per the old brits web page and of course block the front hole....
Only difference is that I machined the casing myself.... not with a vertical mill but my woodworking router & with a 6mm straight flank tungsten carbide router bit... the finish is superb