This is a new to me boat 2000 520 dvx bass masters classic and the biggest bass boat i have ever owned. No Jack plate , 225 optimax and temptus plus 25 pitch. Have tried to make sure weight is pretty well distributed and today had both tanks just a little over half full. Boat runs like a dream to right at 66 mph. Over that is gets a little squirrelly. I have had it up to 69 but just could not drive through the chime. I know I need to spend some more time behind the wheel but does anyone have any suggestions?????