I used the spacer that I got from hotrodminibike but I wasn't sure if the clutch should be flush or not. I haven't tried to line up the chain yet but the PMR mount should help me line it up. Thanks for the help:thumbsup:
What I do when aligning old motors on old motor plates with old sprockets is to hook the chain, rear wheel tightened like it should be.
I mount the clutch, but don't tighten the allens, so the clutch can move on the shaft. Then I rotate the wheel as fast as I can, watching from behind to see any chain bending. I tighten the clutch after that. I can hear the chain wanting to run true, and it changes pitch if it's off a bit.
On my smaller motors, I don't even use the crankshaft bolt, just the two allens and have never had a problem. Clutch seems to stay.
Otherwise, use a shim out of flat washers like others have said.