When I start to accelerate in forward gear I get this ominous thud as though i have hit something with the prop. I am sure this is not the case. It always happens at lower RPM as I am starting to plain out. One gent that I spoke with thought maybe my shift cable needed to be tightened. Has anyone encountered anyting like this? The problem is not consistant. Sometimes it thuds other times it is fine.<br />I have ordered a Solec manual so I can check the cables my self.