It appears that the screw threads are no longer gripping my outwale as there is now a gap between the outer and inner gunwales. In my canoe the screws are inserted from the inwale to the outwale, except by the two decks. Is it a simple mater of removing the inwale, inserting and gluing a thin dowel in the hole of the outwale and then reattaching the inwale? If so, will any type of wood work for the dowel? I would probably just go to Home Depot and get a dowel there. Thanks.