[chumbucket]

fillet1, I don't think a hydrofoil will help that situation. They are designed to lift the stern, not keep it down. I think you may be right with the weight issue or perhaps they mounted the bracket a bit too high when things were changed over. Possibly? ???
One thing you may want to try is a four bladed prop. You'd get better holeshots and better bite in turns. Maybe a bit (negligable) off the top end.