Hello all I'm new so hello .

Quick question... I have a trex 450 pro with futaba 6 ex-h radio.. when I move the throttle stick up the blade pitch increases to max befor the moter will start !! How do I stop this and make the head spool up befor the pitch starts to change?

It is no doubt very simple and is just going over the top of my head haha.. thank every one for there time