Made a vent tube and lowered the float levels a little which were right up to the sight plug. The tube is 5/16" copper from the plumbing section of Sentry. I filed down the ends to where they fit snug in the vent holes and tapped it in with a little hi-temp RTV. Here's a carppy cel phone pic but you get the idea.
In case you're wondering what the bike derailieur lever is there for, it's part of the homebrewed hand throttle setup. A military throttle locking T-handle is hooked to the end of the lever which in turn pulls on the carb linkage. It gives me a reduction in cable pull so I have a lot better control over RPM using the hand throttle than if I'd run the handle cable straight to the carb. I fyou look close you can see the 2nd cable on the throttle linkage just below the main one. More plumbing section parts for the cable-stop there, too.
In case you're wondering what the bike derailieur lever is there for, it's part of the homebrewed hand throttle setup. A military throttle locking T-handle is hooked to the end of the lever which in turn pulls on the carb linkage. It gives me a reduction in cable pull so I have a lot better control over RPM using the hand throttle than if I'd run the handle cable straight to the carb. I fyou look close you can see the 2nd cable on the throttle linkage just below the main one. More plumbing section parts for the cable-stop there, too.