Hi Springman

Hay , a new set of fuel lines and a new pair of plugs is not a "High Dollar" thing to do and might solve the problem ?
A fuel line where it rubs (touches) against something might have a "hole" wore in it ? Even if its only a weak place in the fuel line , it would be a good starting place to "Find out where that gas is coming from".

You said it has Carb's ?
If the fuel is coming out the back of the carb or the over-flow pipe either one - then it's a float issue. I think its REALLY STUPID to put more than ONE CARB on anything with less than 5 cylinders - on a four cycle engine can't but one at a time suck on it at a time anyway (rant

) !
There were some of the Suzuki "V-twins" that have one of the carbs mounted at a 90 deg. angle to gravity ... I'd hate to be the guy who has to fiddle with one of them !

Some of the needle valve have a little screen to keep trash out of the valve and seat junction . If that screen stops up then the fuel can't get through, and the cylinder sputters . The EASY-WAY to check it is to loosen the drain screw at the bottom of the bowl and see if a good flow of fuel is running through the carb its self ... now the bowl might be full to begin with -

- so get a can to catch a pint of fuel and let it run for a bit when the pump starts. If more than 3-4 bowls full of fuel runs through it without stopping to "catch-up" then the needle is clear , if not then that little screen has trash in it and needs cleaning and a filter above it.
The easy way to clean the screen is to disconnect the hose from feeding the carb , then give a shot of compressed air to the over-flow hose coming off the bottom of the bowl. Air will blow out the fuel inlet pipe with the trash !

I hope that makes sense ?

Let us know when ya find where the gas is coming from !