Widowmaker Turning

[chad]

Hey guys,
Been lurkin around a while and looking at the old posts. I bought a used Widowmaker that was stock, except the previous owner filled the hull with expandable foam, and put it on the hatch. I was battling the awful bounce this thing has in stock trim. So I made a couple trim tabs and bent my turn fins in at the bottom. This solved the bounce problem. But, I still cant get this thing to turn at anything above 1/4 throttle. It sways back and forth like it wants to catch and roll. Would bending the turn fins back straight and then out work better for turning? Thought about taking them off and see what that did. One last Q, what is the max voltage this ESC can handle. I was wanting to drop a 3-cell in from my crawler (2800MAh 20C) but wasnt sure if it would handle it. The manual just says 7.2 - 7.4v but Pro Boat makes another ESC that looks identical with the same Amp rating and it will handle 12v.
Thanks
Chad
Indy, IN

http://youtu.be/yB7JROY3yTw