Annual inspections on D-registered gliders in the US

Looking for a German inspector for D-registered glider in Southern
California

A German registered glider requires an annual by a German inspector
Class III (Pruefer Klasse III) and over the last years I realized that
this species is not easy to find over here. With the new EASA CAMO
rules the physical inspection frequency can be reduced to only once
every 3 years, but this still does not solve the problem of finding
the appropriate inspector at that time (and flying one in from Germany
is not the most cost effective solution)
Is there any 'Pruefer Klasse III' around here who could help? Is
anyone with the appropriate license temporarily on business in the Los
Angeles area from time to time?

Thanks!!