I have bought some small sample packs of various woods and I’m just burning them. I started with just coal and I’m guessing the coal is too hot for the wood. So I ordered a electric heater it has 5 settings and again the wood just burned but i did have it on the highest setting. Is this because the wood i have is of poor quality or is the heat too high for the wood ? Also seen these glass plates some people use, would i be better getting some of these ?