Could it be a carb Problem?

I'd dump some real gumout in the tank, I use the cheapest with the white label under $2 at Walmart. But always buy real Gumout brand, has never let me down. In my carbureted or rarely driven cars I put a bottle in every tank and never had any fuel related problem. Personally I would put two bottles in with fresh gas and let it idle for 20minutes then drive it around