Martin does not know Z31s(much)....nor does he particularly like to work on them from what i remember. Not that they are too hard for him....just not his thing.

However, although martin does know Z32s pretty well, we still have a wealth of knowledge from multiple people that have worked on nothing but Zs for a good portion of their lives and lot spare and new parts at our shop that makes it easier for us to work on them most of the time