Quoted from Jimid34:1) The MTL lanes at the top of the game. I think the M and L lane wiring is backwards. When you go through the "M" lane, the "L" letter lights up (and visa versa). I looked under the playfield to switch the wires to the MLT lights, but they don't seem long enough to switch. Any other ideas?
I took my handles off to get chromed and mine did the same thing. When I hooked them back up, it worked perfectly. maybe disconnect the handles and see what it does?