Servo problem?

[Reltub]

Hi, i have been having a problem with my mcpx i have a brand new board on it and have trued re binding no end of times and have tried it on diff tx, the motor is also brand new, when the throttle is down and you move the swash the servos seem fine and go back to center, as soon as you spool up and push to go dorward the servos stay in the forward pos until you manually move it back, hope this makes sense

Thanks

[UKHelibob]

Is this a V1 or V2 board ?
The binding procedures are different if you are using a computerised transmitter.