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Do I need to drill out the tranny case at the topshaft a little bit so that the spacer makes contact with the topshaft bearing?

I'm getting some SERIOUS binding due to the topshaft spacer being pressed against the tranny case.

Maybe I've done something wrong during installation?

Uh, don't use a spacer?

Awwwww man. Talk about totally over thinking a simple problem. Long day at the office, figured I'd come home, install my new goodies....completely freaked out before I thought about it logically.

Thanks Richie....I think you honestly saved me a night or two in the looney bin!

I'll get back to my project over in my sheepish corner now that you've saved the day. haha.

Glad to have saved the day. Don't worry, we've all done similar things. Those of us who have built old/new RC10s have made the B4 topshaft swap and it works fantastic!