PS

Corsa linkage is the one of the left.


Its about 10mm ( IIRC but check on vauxsport ) that you take out of the side of the seesaw that is at the top in this picture



Cowboi, yes same issue with the F20 too as far as im aware although ive never tried one on a standard linkage in a corsa personally to see exactly what happens, but basically you dont have enough throw on the standard linkage, so when the engine rocks and moves, it can cause issues.