I'm restoring a 17' 1914 Old Town. It's in amazingly good condition needing only a new coat of varnish, new canvas (which just might be original-any ideas how to tell?), new cane for the seats (which I'm pretty sure is original) and 2 new thwarts, which brings me to my question: The only remaining thwart is the stern one. The others have probably been gone for ages. I'm sure the boat has splayed (stretched, warped, expanded, whatever the correct term is) to the sides without those 2 thwarts to hold it in shape and I have no idea how long to make the new ones to restore the boat to its original shape. Does anybody have one they could measure, or are there plans somewhere that I could refer to? Any help/advice would be much appreciated.