Any question answered...

How much can I expect to pay for headset and bottom bracket facing? Armourtex charge £45 which appears a bit expensive to me, but if everyone else is comparable I may as well have it done there.

I've had four frames done and paid between thirty and forty and had forks reamed at the same time. Forty-five is upper end but I'd pay it if I needed it. Expensive specialist tools, perishable cutting blades, a steady hand and some experience are what you're paying for.