[Elecraft] [K1] Tuning Jump Cause

[rhulett1 at comcast.net]

I notice the tuning pot seems to have more play than would have thought appropriate, can't say if this has increased.  The "jump" happens at several particular frequencies on all bands.  For example, 7055, 7130; 14055, 14130. Manipulating connections inside the case from the port to the board has no effect. Jaring the rig has no effect.  The "jump" seems to only happen while tuning down the band.  Pushing and pulling the tuning knob sometimes causes a "jump".  I'm leaning toward replacing the Bourne pot, maybe the wiper has developed a problem. Is there potential for any rebate from Bourne?

Thoughts?  Curt KB5JO