Hallett wheeeee!
A lapday will expose all the car's shortcomings, especially one at Hallett. You didn't mention running out of brakes, which is good.
A B14 PS reservoir will solve the B13 puking cap. I also saw an episode of MacGyver where he used a piece of plastic banner as a gasket for a leaky brake fluid reservoir cap.
Sucks about the clutch. The cable is adjusted correctly?
I'm going to have to get back to the track sometime.