My machine ran fine the first 2 times this year. (rode last weekend) put a can of gas in on Sunday and yesterday it would not run full speed. I had this issue last year, seems like if I fill the tank to far it will not run right till it's at 3/4 tank. Last night I changed the plugs and it ran worse after. Is it possilbe that there is water in the gas? Can I use drygas? Seems like all the wiring is connected. Last year the plug tops would vibrate loose and fall off.

thanks for the input.