325abn, Thanks that is what I was looking for. I'm going to try what you did and I'll let you know how it works. You mentioned a vent between the storage tank and the stack. What will that entail? Also, I was wondering since you said you used this set up before how the copper holds up during cool down period when no more sap is coming through pipe and there are a bed of coals still keeping the stack 2-300 degrees. Do you leave sap in the line so it can't melt? Or do you have to keep sap coming in until the entire rig is cool? Thanks