I just picked up a non running 03 500 with 6800 miles. I got it running but it is sputtering really bad. I took the carbs off and cleaned them twice. It would only run at first with the choke all the way on. I cleaned them then it would run but sputtered bad and was puffing white smoke and wouldnt idle. The right carb was leaking fuel. I took them back off and recleaned everything, made sure the bowls were set right and put it all back together. Now its the same but it will idle perfect. Give it any gas and it starts the above symptoms. I also replaced the plugs. The only known issue is the fuel petcock is spraying fuel. After letting it run for 45 seconds I had a puddle of gas on the ground. I have a rebuild kit ordered. Any suggestions of what the problem could be?