my throttle position is about little under half.. i do belive.. it's been last summer since i tried.. ive messed witht he needlked with about 4 other gient scale flyers at my field... no luck.. in fact one of the guys who is very exspeienced asked if he could perform the hover to see exactly what happens.. and the engine shut off, then he didn't make it on a dead stick landing.. had to fix the underside.. and he bought me a new prop =/ so instead of testing her in the air im gonna have a few guys hold it up and do a "controlled" hover =) if tubneing can't work, ill look into another ing.