I was using the west system today for the first time on a sailing modification to a canoe that I have. After mixing the resin with the 206 slow hardener at the prescribed 5:1 ratio the epoxy began to steam and harden after about 10 minutes usage. The hardened epoxy in the container was too hot to touch for over an hour. What did I do to cause this. I wasted about a pint of epoxy.