At 02:13 08 April 2017, Charles Longley wrote:
My club is considering fixing the gear down on our 103. I know some
other
clubs have done this. Does anyone know how it was done and what
paperwork
was involved?

I suggest that you contact LTB Lindner in Germany. They have bought
all of the patents, rights, spare parts, molds, etc for the Grob glider
line, and they provide "de facto" factory maintenance support. They
are quite good with quick responses to email inquiries:

http://www.ltb-lindner.com/grob-saleplanes.html

RO