The results are as follows for help from the places you suggested:
River Sports Outfitters: the cause of the initial problem.
Blue Ridge Mtn Sports: can order the gunwales, but are very costly + I'll have to pay for shipping on an LTL freight shipment.
NOC: They want me to bring the canoe to Bryson City so they can make sure they order the right parts.
Gander & Bass Pro: I wouldn't even waste a minute out of my day to try them.
BFish...I sent an email to Mohawk customer service, they never got back to me. I assume they don't want to fool with something that isn't their product. I don't blame them.