I run short pinions but get 100% mesh, depends on your shaft length (haha).
I am running 87t B4 spur gear on mine colin. I had some noise today under braking, sounds like the rear diff is slipping for some reason but not under acceleration, just braking.. odd.
Car was good, too soft though since I only changed the springs from racing at Tiverton, but overall great.. Stood up well to the harsh southport track.
That track is just too hard for me though - I simply can't go fast down that mental back section, and I lose lots of time because of it.
