So as title says. This weekend (if they have arrived) I’m going to be fitting a pair of cookbot tie arms, replacing the lower arm. I’m wanting to now if when people have fit these they have used new bolts/nuts exactly the same size as the old? Thought I would just clarify before I pick the new bolts and nuts up. Also - should I set them a couple mm shorter? Or just let the mechanic do it when I go for 4 wheel alignment? Thanks. George.