Pulled the RF board for some component replacement, and decided to clean the bandswitch wafers while it was apart. I have a TS-830S
in working order nearby and copied by eye the wafer positions with respect to the dot on the plastic wheels in the center. However when powered on
theres arcing under the RF driver tubes socket. When I move the band switch to AUX (then re apply power) , its not arcing anymore.

I heard one of the wafers has the B+ for the tube on it, so I am thinking maybe one of the 2 in the back were not aligned? Its hard to see inside between the boards
to confirm. I had marked on the front panel where the arrow for the knob was pointing when I removed the shaft so that the final cage wafers would re-align right.

I also looked under the board to make sure no hardware was floating under the socket, looks ok.....