I have a 1997 Four Winns Horizon with a Volvo Penta 350 5.7 GLi engine and on Sunday I was pulling into my slip and went to reverse and the thing shot forward! I turned the engine off and let it sit, turned it back on and reverse worked ... I went back out and wanted to see if it would happen again. This time when I went to restart, the boat started in idle moving forward when it was in neutral. I then went to reverse it and it went foward again. I presume it's the throttle cable?