I have a new 140DZ that seems to be inconsistent on idle setting. Idles good on the ground but changes after in the air a while (speeds up) requiring me to adjust trim. Sometimes it to take a little while for the engine to spool down to an acceptable idle for landing. Always has good transition on the ground and in the air. Does the pump need adjusted! I've pressurized the fuel system and have found no leaks. All screws and bolts on the engine tight. I am using the following:

Tettra Tank
powermaster DZ 30% fuel
APC 17x12 prop
OS F plug

Thanks, Todd Schmidt