[Kenwood] Strange TS-570D problem.

[k1alh]

My TS-570D does some weird things when I adjust the squelch control.

When the knob is turned to above "6" the radio jumps into split mode and the frequency on VFO A starts scanning down the band.

Turning the squelch knob back to 0 and up again the radio jumps into memory mode.

Turning the squelch knob back to 0 and up again the radio returns to the frequency I was on before I touched the squelch.

I've done a full reset and that didn't fix it. Any ideas?