Be careful, Ive seen the aftermath of many boats that exploded from pumping gas like you want to do. Keep the blowers on and run a grounding wire to bond both tanks if possible.
Have you tried a little dry gas to mix in?
Ya I tried 2 bottles and got the same result... I hooked the motor up to a 5 gallon gas can and she ran fine so there must be too much water for the dry gas to handle