Had the same problem. Seems the supports for the floor and water tanks kind-of float.
I jacked up the floor and added a short column in front of the mast. Tried adding a wedge between the floor and the hull but the wedge dislodged.
All in all the short column solved the problem.
IDYLL OURS, when in Auckland, discussed the issue.
I like the idea of a PVC post rather than wood, especially since water from the anchor locker drains past this point.
Cheers
Dennis