So I took the entire wheel apart…fairly straight forward design. Heated the wheel head and ensured the shaft was fully seated with your suggestion. I am still not certain how the wheel head is attached to shaft which is a 1 inch carbon steel bar stock with a key way machine for the motor belt pulley attachment. Reassembled and the wheel still is slight wobble which appears to be originating from the belt pulley to be honest so maybe it is the design of this wheel? It is a shame I can’t more information as I really like the over all design and setup!