Sap ran decent yesterday. Have 17" of vac on one Shurflo but a pump malfunctioning on the other line. Replaced the diaphragm but still not pulling more than a couple inches and it doesn't sound right. Walked the lines twice and they look good. New pump will be here tomorrow. Got a small freeze last night and 2" of fresh snow. Should run good for a couple days with no freeze. Looks like it is going to get cool again early next week. Boiling again tomorrow afternoon!