thanks for quick reply. i tried holding closer during bind.Did not help.Also shut wifi router down.still doing same thing.Whats odd is if i halve throttle at high and bind will flash slowly then when i pull throttle back will go to fast flash.elevator ,rudder and Throttle does work while fast flashing.motor runs. is there possibly an update for trans.or a different software for trans? i have one of first ttx650's made.Maybe i should send tx in to make sure its not prob.even though it does bind ok to 624's and range tests.not sure what to do at this point??also i have throttle reversed in tx.is this correct?thanks for help