this winter i purchased a frame of restored banshee. the guy brought the motor to be professionally rebuilt by the best place around me and by the best guys, and i know the guys who rebuilt it and they're the best around here. it was top to bottom rebuilt. anyways, i take it for a ride down the road kinda taking it easy Everything is good. later that week i take it down the road just dies, i kick it and starts but left cylender is popping and miss firing, i kill it immiedetly, amd thats when i realize theres no fuel in lines, i turn res on try agian, same thing. i put a choke on and tried again and it was fine, I turned the choke off and drove home fine. its been running great since but the right cylinder is a little smokier and more powerful exhaust than the left one, and also there seams to be more heat on the right side, but it ran great so i just assumed just some fine tuning. but today i was riding and was doing a couple donuts in the grass, not aggressive or anything and it got traction and stalled, i start it up and at first i though the throttle was stuck wide it was running super wack, and then i realize its on one cylinder, i put it in the pickup and drove it home, and it wont start at all now. i cleaned plugs and am getting new ones to try tomorrow. when i pulled the plugs the left one looked really dry but black, there were also little chunks of metal in the spark plug. i used a super crappy compression tester and i got it up to 110psi, but it normally shows less than it is. it has 3.4 hrs on it. i think the left carb might be gummed up, seems to not be getting fuel on the left side. I also found that the gas tank gets compressed it squirks gas out the breather whenever i stop after riding.
any ideas??