Anybody wet the canvas with water after stretching?

I’ve had loose canvas after filling on two occasions. Both times the canoe was canvassed during a period of high humidity.
Once was during a heavy fog on the shore of Lake Superior and the other time it was under a tarp for a demonstration during a thunderstorm.
In both cases I waited for a dry period with low humidity and removed the staples, pulled it tight with pliers, and re-stapled it. From then on it was fine.
You know how much your kitchen cabinets swell during humid times.... Well the same happens to canoes, and I suspect cedar swells more than hardwood.
I think it important to pick low humidity times for stretching canvas.
 
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