Following Andy Draper's definitive answer on what sort of spar pins you
need, there was one other strand of the argument I thought worth picking
up - the question of what to do with tight pip pin bolts which are difficult
to get out. Mine are pretty tight, but I am quite keen to keep them that way
as any movement here seems a bad thing, if you don't want your wings
flapping in rough weather! I have found that a small tubular spanner that's
just the right size to fit over the handle of the spar pin makes it easy to
get in and out. David Joyce G-XSDJ
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