I don't think the new mix has solved the problem. Maybe it has improved, but not cured. I had to replace the rotary encoder for the Width control. When I put the front panel back together I noticed the inner AF knob was split. I super glued it back together and tightened the setscrew just enough to grip the shaft. So far so good. I was tempted to replace to two inner knobs with some beautiful black anodized aluminum knobs I have but didn't want to change the original look of the K3. I think these knobs are from Alcoknob.
Plastic knobs without brass inserts are destined for failure at some point, IMHO.
73,
Tom N2CU <><
K3 #3582
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