Looking good! I imagine there was some wheelspinning with no tread on the tyres and the whole thing weighing slightly more than a typical beetleweight...

I remember getting confused about the F2 wiring for a while too... I assumed it was one red and one black per "side", when in fact the red pair is one side and the black pair the other. Took me a couple of hours with a multimeter to work out what was going on. Then I found the instructions on the N&B website. (BTW, Lucy, the F2 does indeed have on board mixing.)