Reply to Jogwheel problem

It seems my right jogwheel doesnt work perfectly anymore. For example: I have to push verry hard to scratch and it stutters when i scroll through a track. So it looks like the touch sensitivity isnt working for the full 100%. The left joghweel works as smooth as it always did and you realy feel a difference. It also seems the jog works at is best in the middle of the circle. The further you touch it out of the middle the less the touch sensitivity. Btw the touch sensitivity buttons on the back ar set the same for the left an the right.
Does anyone know what this problem is? Is it a hardware problem ?

Thanx

Nick