[amarinesurveyor]

Perhaps the rigger tightened the rig like a race boat? Is the mast step / compression post all in good condition? The boat is moving (flexing) and is either not designed for those rig tensions or there is some deterioration in the mast step. Hope this helps,
Brian

 

[amarinesurveyor]

In the photos I've seen it looks like the mast is stepped on deck with a wooden compression post between the 2 doors. I would lift the floor boards around the base of the post and see if there is any soft wood or signs of movement down there. If everything is solid and in good shape, you just have to find the rig tightness that will still allow the doors to close.
Brian