My Edge would do that also, but on low rate, and never in the same
place twice. It was very scary and unpredictable. I was still working
on a solution when i crashed the other day... (I think it was related
to duel elevator servo setup)

This may have, and I say !QUOT!may!QUOT! have contributed to my crash,
but make no mistake... an incorrect rudder input by myself was
the overriding factor in the crash.

It happen so fast... in panic mode I pulled hard on the elevator
at low rate and it might have snapped, but I'm not sure if it did
or not, another Hare owner was watching and said it looked like it
snapped, but who knows...

It is nerve wracking not knowing when or under what circumstances it
will happen.

I was thinking about the Extra instead of the Edge for this very reason.