Some great memories being brought back by these stories!
I too will always be eternally grateful for the help and assistance that Nick Marson along with Rory/Roger/Fran Cull offered me.
I was also around the Alcester / Gloucester / Worcester tracks at that time and would probably recognise you Mark if we were to meet. If you're still in the area pop over and say hi at a meeting (easy to spot as I'm likely to be in red Kyosho race wear & have long hair).
I'll have to try and find time to recount some of my tails from back in the day