Deejay, sorry but I gotta to disagree about the bolts.
How can 3 bolts spaced 120 degrees cause inballance? it will do so as much as the 3 screws that are 120 degrees apart, the things that would cause imballance in the clutch assembly depending on the age of the machine are the 2 set screws or engine output shaft clamp pin.
As for nuts and bolts dropping off, I would whole heartedly trust a bolt with a nyloc nut a whole lot more than the original screw, spring washer and nut. Hmmm wonder how BlackMilk's elongated holes in his clutch hosing came from?
I'm all for original but some things are better/ safer modified than OEM specs.

I was just offering a alternative to BlackMilk to dropping ~$150 for a new clutch housing.
Cheers Andy