Novak Conversions Jeep Wrangler YJ radiator

Trying to figure out fuel connection to Chinese 2100 carburetor

China FUBAR'ed threads? Unfortunately there are Metric barb fittings and maybe thats how it was threaded. It leaking when running? There are a couple fuel proof Permatex products available if needed.
 
Novak Conversions Jeep Wrangler YJ radiator