karel adams wrote:

My PPL ground school certainly disagrees with you!
Do you have any example of such a design?

Most conventional airplanes when flown in their
approved CG range will have a down force at the tail.
If the CG is moved aft of the aerodynamic center of
the wing alone but remains ahead of the neutral
point of the airplane, the tail will (generally)
have an upward force. Pitch stability will still
be positive, but in most GA cases far less than
most of us are used to.

If it's as you've related, your 'PPL ground school'
may be correct in a statistical sense, but not in a
technical one. Big surprise, that.

Dave 'phugoid phollies' Hyde