We got our brand new DC guzzler hooked up to our 75 taps. We turned the pump on, and left it for an hour to develop vacuum, we went back and the sap in the laterals was sorta sloshing back and forth but didn't seem to be moving. We pulled a tap at the closest tree to the pump and there wasn't any vacuum to speak of when we held our thumb over the tap. After work I am going over to check the diaphragm. We had a drip rate of about that of a typical tree on a bucket, from the 30 trees after the sap ladder before the vacuum was turned on. The drips when the machine was running were almost a stream, but not really 100% continuous. Do any of you guys have any ideas or suggestions? Is this actually normal?

Thanks
Mike