I have found an exploded diagram with the crankshaft spacer:

http://www.supertigre.com/parts/supg...9-exploded.pdf

This spacer was not in the can of parts I had for the engine. Unless..................maybe it is stuck to the bottom of the can!

BUT, looking at this, I know I have seen this item in the past!

http://www3.towerhobbies.com/cgi-bin...0294&search=Go

Thanks again!