I started restoring my 1964 Old Town OTCA five months ago, but had to put the project on hold. During the on hold time, with the canoe partially unfastened, the canoe seems to have changed shape. In preparation for replacing the tops of the stems and the sections of inwale that attached to the decks, I removed tacks from the tops of the ribs near the decks and from the top couple of planks where they attach to the stems.. After having stored the canoe for months outside, covered with a tarp, upside down on sawhorses, through a sometimes wet Massachusetts summer, the rib tops near the decks are now about ¼” higher than the decks. Have the decks lost some curve or has the shape of the canoe changed somehow? How can I correct this or should I just let it go? The ends of the inwales need to be replaced, but the decks appear to be in good shape.