RE: Help with Walbro Carb on a Brillelli SPE engine
Super has you covered for all but the one that points toward the firewall. That is the vent for the metering diaphragm. Run a hose from it to the inside of the fuse and you can just leave it open, put it in a small pill bottle with a couple 1/16" holes drilled in it or build a small balsa box to put it in with a couple small holes in it, it should not be plugged.