In the past I have "lightly" sanded sticking segments but the most likely cause of sticking is built up nicotine and the grime that sticks to it.
Also, as far as I know the only wall guard that is available is one you make yourself.
If you indeed have a Super 6 plus II then you have the three lead interface board. Obsolete is an operator term that means "You should buy a new version from me!"
Simply open the back of the game, remove BY HAND the four nuts securing the plywood b…