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Follow Darryl's advice below.

Repair will vary considerably depending on the
make and location of the break. Many gliders
have long straight lines in the tailcone, and
for these it's easy to spot misalignment. But
you need someone competent to check this,
review the logs, and check the W&B !
That person is NOT your local RAS expert,
club expert, or local mechanic.
Do not skip this...

Hope that helps,
See ya, Dave