As the fastening bolts are inside the "bell shaped" housing of the primary drive they should not need to be other than standard bolts. Be aware, I have so far found 4 different versions of bolts on the engines, both standard and fine metric, and versions of what the Americans number by thread count.
They have required less massaging at what I would call 11 o'clock (I look from the crankshaft side) than anywhere else. Get rid of the stock muffler and all will be well as in your drawing
Enjoy the break, but I'll put money on it that you don't stop scheming!