when you have some bad fuel..........Sat while going from one fishing hole to another I experienced a hesitation or stumbling like I was running out of gas at around 4800 rpm. It startled me and I peddled the throttle a little and it cleared up it did this a couple of times. Also on Sun coming in for weigh-in it did it again. I have never had a feeling like this except when I lost a cylinder and of course that time it didn't clear up. Any thoughts?