I have a 2003 Tahoe ski/fish 3.0 liter boat, it has a mercury inboard engine on it. Couple of weeks ago I took it to the boat shop to have a drive lube leak checked. Before I took it the trim would move up and down like it was supposed to, now it wont move no matter what I do, any suggestions ?? it has fuid, i checked it. power or no power it still refuses to do anything.