I have a factory-built K3 #3215 and have always noticed a significant amount of backlash on the four encoders located just left of the VFO A knob. Has this been improved on newer K3's? Is there a replacement option or a newer front panel available to improve this? Any info would be appreciated. Thanks. Mike AC6JA K3 #3215 P3 #2039 KPA500 #809