Hi, I have had a problem with my axiom since I bought it. The following 6 notes do not work.

I have tried resetting the axiom but it doesn't work. A few times I got these notes actually to work, but the next day they were gone again. When I play the other keys, reason shows signal, but these keys dont even show signal. I have only had problems with those 6 keys, they are in the middle of my axiom so I can't play much piano songs. Please help!