I let my 2000 kodiak sit up quite some time(my stupidity)and it started leaking gas and filled up the carb and air intake box. I took it to someone and he got it back running, sort of. It seems to run ok when you first start it up but after a while it has a slight miss and it seems to load up. The other day I was loading it in the back of my truck and everytime I started up the ramp it would stall out. I replaced the spark plug and the air filter has also been replaced. Also I cant get the fuel **** to work in the off position. Can anyone help? Thanks