Buttons on remote control not working.

I have a pretty new remote (maybe used it 6 hours) and one set of buttons stopped working after I put fresh batteries in the barin (the buttons on the right side that control raising and lowering the claw), I switched the motor to a different port and it works fine, so it must be the remote. When I recalibrated the joysticks, the brain “saw” the button in question so I wonder if its a mechanical issue in the button itself. What should I do?