Tokina warranty/service issues?
 

Lately been looking into getting an ultra wide angle lense, after much research the Tokina 11-16mm f2.8 looks to be the best available...however it's not cheap and looking at the Tokina website things seem a bit vague as regards to customer support/service etc compared to the main rivals should I need it. I have seen a used example but dubious about grey imports etc and missing warranty cards etc, came to the conclusion I'd be best gettong one new from a reputable source.

Anyone with experiance with Tokina warranty/aftermarket care?

Matt