That’s because for me it doesn’t happen very often 
.
Unsurprisingly my brake disks failed to turn up in time for me to trial fit them before I left for holiday, and this caused a realistic evaluation of the amount of work required before the next meeting at Lydden Hill. With no rear brakes, the engine baffle plate to fit, loads of tiding jobs to do and a race transporter with no MOT there is plainly no way I’m going to be ready for Lydden particularly as I’ll be on holiday for a week (crucially 2 weekends) between now and the meeting. So I’ve cancelled my entry.
Bah. Grump!