Bought a 96 Dolphin 535 last fall. Drove it from Flint, Michigan home to Terre Haute, IN ( about 550 miles). Very sloppy steering and a vibration that started at 40, peaked at 48, and stopped compl...
I agree..most likely is improper driveshaft phasing. To understand phasing of a driveshaft, everyone should watch this short youtube video....Click Here