Lee, ignore the instructions for the clutch.
Assemble the clutch up until the tightening of the spring nut. Install both ball bearings in the clutchbell. Place the bell over the shaft and spin it. If the bell rubs the shoes, install as many shims as needed to prevent the clutchbell from rubbing the clutch shoe. Once that is done, install the thrust bearing assembly, and install shims between the screw guide and the outer thrust bearing to allow about 0.4mm play. Check again after break in.
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Airtronics Avid RC Byron Fuels VOX Engines
VMR Tires - available at http://motonica.ipower.com/store