Was at the lake last week, running at very high speed and the power steering belt broke. The boat turned 90 degrees left instantly. The G force did a number on everyone in the boat, surprised no one went over the side. I was able to throttle back quickly and avoid disaster. I carry 2 spare alt belts but no spare power steering belts so had to drive it 2 miles back to marina with out p/s. It pulled very hard left getting on plane, then darted right when I throttled back. Very hard to drive. Anyway, got it home and installed new p/s belt and when I started the starboard engine the steering ram and stern drives started oscillating back and forth violently, shook the whole boat. Anyone have a clue what might have happened? 1987 chris Craft stinger 312, twin 460 fords, omc cobra stern drives, and volvo penta power steering ram.