Picked up a used 750 Mighty Demon... where to start?

Got the carb on the engine today and started it up... Ran OK, got it to idle on its own but tons of leaks I need new fittings on the carb and some fiddling with the new fuel line from the "Irish parts store" lol. Seems to be a small leak coming from a plug on the "splitting" block can I use Teflon tape on this or will it dissolve and get trapped in the carb?