[Vidal Doll]

At the risk of sounding like a cliche--hard to starboard!--in our first cruise as a family on our new-to-us 31 Open, at approx 3,000RPMs and up, when letting go of the wheel, the boat tracks left. It easily turns to port, but starboard seems to be more diff. There is no resistance either way at dockside maneuvering or speeds up to 2,500RPMS, but steering is noticeably harder to starb somewhere above 2,500. Survey 30 days ago for purchase and sea trial went smoothly, but I was not at helm! I adjusted trim to zero and no difference was made. This is my first twin inboard and was wondering if eng rotation had anything to do with it. Hate to sound dumb--just not used to a boat tracking to one side...I'm sure something is out of adjustment???