Does anybody here have any experience using the Durst vacuum easel? Mine specifically is a Vazent. I'm having trouble getting vacuum to anywhere except the most central portion of the easel. There are what look like steel pins, flush with the easel, which are placed in a pattern radiating toward the two back corners and another line radiating to the left. I have not been able to determine the function of these pins. They appear to be more than simply locating or registration pins since they are plumbed into the vacuum line inside the easel itself. The easel is connected to a large Gast vacuum pump.
Any suggestions would be appreciated. No, I have not contacted Durst Pro USA yet; I thought I would ask here first.