[Elecraft] VFO problem

[Bill Turner]

My K3 has developed a problem with the VFO. It is, of course, just
barely out of warranty.  :-)

When I turn the VFO knob very slowly, the frequency display follows
normally, but when I turn it a little faster, the frequency display
freezes and intermittently  unfreezes but immediately freezes again as
long as I'm turning the knob rapidly. Behavior is the same regardless
of what VFO speed I have chosen. 

Any ideas?

Bill W6WRT