[chrisguyw]

Looking good Jeremy  ............a little suggestion/tip if I may.

It might not be a bad idea to put spacers between both the spur gear and the wheel hub, and the stopper and the wheel hub on the other end. (the spacers should obviously take up the full gap).

As you are aware lateral axle (spur)  movement in an anglewinder configuration will affect gear mesh,.......while this is not that critical in one off club events or running around at home, where you can monitor and adjust the rear axle lateral play, it does become more of an issue in proxy events with multiple events and tons of laps.

By adding spacers between the stopper/spur gear/wheel hubs, you effectively add the wheels' grub screw  as another safeguard in minimizing lateral axle movements.

Cheers
Chris Walker