So on my 01 Grady marlin, I am trying to figure out which outboard(port or starboard) each of the fuel selector valve actually goes to. Right now each outboard runs off of a separate tank, one on the main and one on the aux. I’m just not positive which tank is feeding which outboard. I’ve also noticed that the fuel gauge reads quite a bit lower when the switch for aux tank is on. I never really fill it to the brim when fueling it up so it’s hard to verify if it’s actually lower or if it’s the sender/gauge? Has anyone ever ran into this before? Thank you!