Hi Dave,
My 140DZ flies flawlessly on the first flight of the day.
Then on the second flight it will run for 3 minutes then dead stick after a short low throttle coming out of a loop or any other procedure were you would use low throttle management.
It has a large plume of smoke all through the throttle range.
Starts are relatively easy.
I was thinking maybe it is to rich on the regulator.
APC 16-10 at 8700rpm 20% oil coolpower (10%lv&10%normal) 15% nitro OS F type plug.

any ideas before i start screwing around.

PS it now has a brand new carby after an accident the other week. It had the same characteristics before the accident.

Regards Lawrie