On my 4 bolt cases it was a tight fit. If you push it on and then line up the 4 bolt holes.
You can put the bolts in and tighten them half a turn at a time in a cross pattern to pull the clutch case on.
which bushing are you talking about?
or do you mean the race around the crank shaft that the clutch housing fits too? Like BigKel Said its a tight fit even on the 2 bolts but its a good fit! goes on snug. i seem to recall using the bolts to pull the housing to the case. then removed the bolts and i was able to move the housing, which meant it would come apart should i need to get them apart for some reason.
just took these pics about 2 weeks ago when i installed a possible future Slammer Damn on it.