Thanks guys, that could have been an expensive mistake!

Having had a closer look I see what you mean, noob enthusiasm running amok I'm afraid
The ones from prs seem to be what I'm after
http://www.prs356.com/parts_for_sale.ph ... &model=356 maybe they'll sell me a set without an exchange??
As for contacting Fibersteel I can't help mate, I just grabbbed the pics from there site, however I only hear good things about the company so maybe just crossed wires? I have contacted speedster clinic, but not about gauges if that's what your suggesting I do? A lot of the rep gauges I've seen seem to be missing the 'VDO' branding, naturally enough I suppose but I'm a real fusspot when it comes to such seemingly minor details.
I can't find 356 gauges on speedycables.com ?
EDIT- god bless you Andy