C4.1 Rear suspension blocks

[RobW]

Anyone know of anyone making any C4.1 rear suspension blocks out of a harder wearing material?

The pivot holes in mine seemed to wear quite badly over the first few meetings and then remained about the same. Not sure how much it is affecting the handling (seems fine to me but then I've got very average thumbs ability) but it can't be helping having variable rear toe-in.

Rob