Further flight testing results:
Increasing the control throws got it nearly there. When the engine is on peak, it is pretty close. It might use longer lines than the 38' ones, or perhaps more control throw.
The Medallion does not like the Cox glass filled 6x3, and overheats. I will try an APC 5.7x3 tomorrow. It also might be fuel foaming. Whatever, power isn't reliable, and you can't tune in a plane with iffy power.
The landing gear was way too springy, so there is now a cross wire soldered at about half way down the wires. Also, a tall tailskid was added. When I drop the model onto my workbench it only bounces a little, and stays level.
Picky, picky, picky!
This model does have the capability of flying a competitive pattern when all rhe gremlins are tossed overboard.
Going flying tomorrow, so more newsas it breaks!