I belive I got a few gallons of bad gas, which caused the initial miss. I ran a bottle of dry gas and 1/2 a tank of fresh gas and still had problems, mostly coming off idle. I replaced the cap, rotor, wires, and plugs thinking that would clear it up. The miss is 75% better but still there.

I'm stumped. Any other ideas?

 

check the ground going from the back of the head to the fire wall. Mine broke and caused the motor to miss fire.

 

I checked that, but it is new from whn I had the cab off and far bigger than stock.