....
Dave, thanks for the answer. who's JJ?? hmmm, front half of
production glider? sorry
but this is unclear to me. chris

J.J.
is one of the most prolific contributors of this group.
He was an expert glider repair person till his retirement from this
profession. He his a contest glider pilot and he has a great sense
of humour. Do a search into the archives of this group to get an
insight of J.J.
Udo