steering blocks
Opened a brand new spares packet and you can see a visible difference, measured at several points with calipers and measured up to 2.55mm, the smaller of the holes measured max of 2.30mm so for me this affects the 2 x kits i own and also spare parts packet. I also had some old D07 blocks either V2 or V3 and they are not quite so noticeable to the naked eye but they do measure to be larger as well but only up to 2.45mm vs 2.30mm. in summary there is a variation in the two holes on the steering blocks (top or bottom dependent on which side they are fitted) Looks like a worn mould tool which has deteriated over time perhaps