Simon and others , How many times have I said we need log books. Simple. Yes blooming simple !!!! but no body listens to me.
At the start of the year or your first race the car gets scrutineered. Any problems are reported and noted in log book. Next meeting you turn up with your car with log book and have completed any changes to the car. If you have an accident at a meeting the damage gets noted in log book and then again next meeting car gets checked. This system is used in hill climb and we run in Holland where there is one scrutineer and he can check 30 plus cars and he also races himself.
OK might take a bit of getting sorted and used to but this will solve all these issues.
See you in the Que at Oulton.