Just a few thoughts. I've no idea what construction is under the deck but presuming the boat to be ok, ie. no water in compartments in hull. Since it's listing at rest, it has got to be weight. Where is the battery, the same side as the auxiliary? Is the seating central and equally spaced each side? Is the engine central on the transom? Just search it out. It will not take much weight to lean the hull at rest. However, underway, the engine torque reaction will tend to tip the boat to port. It is common to mount the main motor to starboard to help counteract this.
A boat will list into the wind. You didn't just happen to notice this with wind on the port side, did you?
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JW.
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