Zx6 low RPM studder.
I have a 1992 zx6d. I bought it a little over a year ago, had it tuned, and it ran perfect tell 2 days ago. about 4 miles after getting gas (100% pure gas) it would hesitate, then pull like normal when getting on the throttle under 5,000 rpm. I thought I had picked up water in the gas, so I drained my tank and carbs, and put new gas in it. it did better at first but started showing the same signs while riding it home. Maybe there's still water in it, or maybe it's a week coil, or has something to do with the plugs an wires? Any help would be very much appreciated