Silicone and gas donĀ“t mix. Gas eats silicone very quickly. It also gums up just about everything it touches. You will have to pull the carbs and clean them again. The tiny passages in the carb and the holes in the slow and main jet could be clogged.
I subscribe to a message board: www.v4hondabbs.com and have been for years. Check out the vendors section. They sell carb kits and just the o-rings if you ask nicely. Tell BillyC that Masonv45 sent you. I would recommend you get at least the float bowl gaskets and the fuel tube o-rings.