In case anybody was wondering, Sean was right - aluminum hubs on the steel axle didn't work. At least not for more than one flight. On the taxi back after the landing, one of the wheels seized and when I disassembled it, the brake was full of metal shavings.
SO... I used Sean's suggestion of 3/16 ths wire with wheel collars for axles and bushed them with two thicknesses of brass tubing to fit the struts. It took about two hours, but I should have done it in the first place - the easy way out doesn't pay...
The good part is I now have a really nice set of gear, struts, and wheels on my Euro - two years after I finished it - the cheap way doesn't pay either!
Bob