Well i didnt really buy all my pinions in a big bulk but ive steadly bought them over a few years as and when i need them but the one ive got on now is a few years old but ive hardly used it it was for my touring car which i hardly ever used so it hasnt had much wear at all. As for layshaft and idler gear there brand new the cars only had 1 meeting and one club night. A little odd. I may try a brushed motor and a plastic spur see if that is quieter then see if that solves it.
Thanks danny and everyone
A