I have the tour max plastics in my 1980 34's. never stuck. The brass I had was eaten alive by the green fuzzies. one still floated, but felt wisper thin below the fuel line.
Tourmax's are sleaved. I had heard the cheap ones aren't sleaved, and the barrel the pin goes thru isn't round, and gets hung up, letting the fuel to keep pouring in. I don't know what brand mikes has, Was told 'run away!! runaway!!' If they are tourmax's, maybe I just got lucky twice.
As far as welding the holes in floats, good luck. I can tig, and have done some seriously thin stuff, but brass soaked in gass for who knows how long would prolly pop on you. I did try to solder a hole once, ....once. POP!!
Pot? well, I find if you need it for medicinal purposes, chronic back, nausea, seizure, its good there, and doesn't do much for getting me high, but if someone where to smoke for the sake of the high, that's just what it will do.
Time, place, moderation.
Im not saying its a miracle drug, like Uncle Alfies snake oil, But by gum, the research sure proves to have a lot of good uses.
Name a good use for alcohol? Other than whiskey and biting on a bullet while sewing your own wounds shut.
Tasty though
