The CT on the mossie keeps it in a continuous slight pull up attitude. It keeps trimming up till you inevitably stall. When flying with the CT at any attempt to fly near stall the trim-up will push you over the edge.
This is with a clean configuration, less than 50% fuel.
I'm not sure if it's the trim that is off or the CG of the plane as it generally feels a little tail heavy.
Bozon