Very happy today.
Ever since I first built the car I've had trouble changing gear. I'd really struggle to get it into gear at times and occasionally the gear stick would lock completely solid.
Stripped down the gear turret and found a loose, slightly mangled, grub screw floating about in it!
Went out for a drive this evening without the rouge screw and the gear change is finally nice, slick, and trouble free, just like the mx5 box should be