Reply to Browse knob works maybe 50% of the time

My browse knob (as far as turning it left or right) works maybe half of the time. Sometimes I'll turn it 3 or 4 revolutions and nothing will happen. Sometimes it works fine. Sometimes it will skip a couple "clicks" and then work.

Very frustrating. Anyone else run into this?

I've had the unit since it came out so I'm sure I have no kind of warranty. I don't imagine this thing is too user-serviceable? I also have a stuck FX button.