Would there be anyone willing to transport self and AventuraTT, to and fro, on the day? Contribution to petrol, of course.
Never mind the bumps, my main concern is if I'll be able to cope with wearing a helmet.
Eastside in Edinburgh would have done it for you, I've been in there before when they've been building fat wheels. At least it would be in roughly the right direction. And they do wheelbuilding quickly.