Thanks for the tips! I found this document on rotafixing:

http://204.73.203.34/fisso/files/sch...g_sprocket.pdf

Since I need to make sure the chain line is straight before I start permanently attaching the sprocket - do I just put the sprocket on first (snug enough to remove with a whip) and line everything up and then take it back off apply the JB weld and rotafix it?