I am trying to avoid using acid to clean the steam away. I saved the last couple of tankfuls of distillate,looks like the flue pan might be clean,but won't know for sure until I lift the steam away. Syrup pan is clean,pumped the distillate from flue pan back up into the steam away,added 5 gallons of vinegar to it,but it has been so cold that there is a skimmer of ice on top. When it warms up some will drain steam away,and pressure wash it. If it doesn't come clean it will either be snotty sap or acid. Thoughts?