Good day all, I am in the process of building the footswitch for my Fender Power Chorus. I have (very) limited knowledge of reading schematics, which led me into minor issues. Time is not on my side, as I had trouble getting one of the component and I need to build this today due to my band having a "Battle of the Bands" Saturday afternoon. Therefore, I need to build this today. The diagram calls for SPDT switches which have 3 lugs(if that is the right term) but I have no idea how to connect this into the circuit. What do I do with the middle one? I am also uncertain of what jack needs to be used, is it a mono one or a stereo one or a stereo one but wired mono? I have unfortunately different interpretation of it by various people. Please note I am following the diagram on the right for serial numbers S/N L099109 & above. I am grateful for any help, thanks!