I have been resurrecting a 1987 Well craft with a 3.0 mer-cruiser (1988). I've ran into a few bumps but have finally got it in the water. The biggest issues Ive had are fuel issues. When we first test drove it the boat would get real sluggish when cornering (almost stalling). We then decided to add a fuel water separator after reading posts on here. We also installed a external 12 gallon tank with a gas line and primer ball. The boat now runs perfect except after running for 45 minutes or so it gets sluggish at full throttle. I notice also that the primer ball is empty when this happens. I am thinking of adding a electric in-line fuel pump just to check if thats the issue. Is there anything else I should try before going this route. I appreciate any suggestions.