Riko's arc digital only mod on slot forum works.
Disconnect 2 power wires from 1 lane then resolder those 2 on opposite side of lane.
Since 1 lane has been changed , analog runs like a city street with cars running both directions.
But moding or keeping arc pro stock really depends on your needs , digital only or including normal racing analog.
Read of work around where lines go out to switch allowing choice between stock and mod analog direction.
Wondering if just brought 1 lane power out under to connect to lane jumpers to plug into track depending on choice of digital or analog , would be easier than installing a switch.
With both lanes powered out , analog racing direction could also be reversed just as with scaly powerbase from early 2000s that could use 1 power pack per lane with direction choice being just a plug in under base.