Bit of a random one that's proper left me baffled this afternoon...   Original wheel is a bit grim so decided to go for a new Nardi wheel and HKB boss. Did the reading before and bought the EG/ DC2 (airbag) kit. Gone to fit it all this afternoon and the boss feels like its about 1mm too big for the spline. The teeth aren't engaging and I'm able to turn it without the wheels turning, even with the retaining nut back on the column and things tightened.    It is the OH-206 kit (