I recently bought the 1320 gross weight STC and the change is simple if
you have a CD. All of the "mods" have already been done during
manufacture and all that remains is to remount the elevator stop on the
yoke "tube" to a second hole already drilled by the factory.
However, we measured the elevator deflection with the stop mounted on
the second hole and found the deflection wasn't quite correct so we
drilled another hole to mount the yoke stop about 1 inch behind the
original. Still lands the same as far as I can tell. Maybe can't get
as much nose up attitude at touchdown, but close.
