classicpert

I bought an Elise 111S with Honda B18C engine a couple years ago. Love the package but shifting is notchy and vague...so easy to mis-shift and hard to put into gear at times (even when warm). It is cable driven; I've put short shit kit and has not improved. See pic..it looks like has linkage kit on the gearbox side. The car is originally imported in US by Sun International long time ago. Any ideas or suggestions on how to improve?