Snug. Like just a bit tighter than finger tight. Not a high stress application. No need for Loctite. Nuts should only be snugged with a wrench or small ratchet as well. Over-tightening there will distort/warp the carb base.
Tech support called back and that is pretty much what he said and confirmed what I was thinking. Fingy-tight, no loctite, tighten in a X pattern. Seems to work fine. The one video I was able to pull up had the guy reefing them in with double nuts. I have worked with aluminum parts long enough to know that is a recipe for needing to heli-coil it in the future.
