Thanks Kevin.
If someone could bump our conversation onto a new thread it will keep the initial history and context.
In the meantime I can update from on the make of chain set I have been supplied. They are AutoMega - Dello, that I suspect will give a raft of feedback. I have also confirmed part number on the supplied boxes, and it confirms I have been shipped a kit for Z22SE. My order and the invoice show otherwise.
I have been emailing and phoning the supplier repeatedly, and they never reply or pick up. Maybe they are on Easter shutdown?
Does anyone have experience with them: Vauxhall Car Parts?
Steve