Look this guy is having problems pumping water through the filter press. Something is wrong with the press and or the set up. Call Daryl and have him walk through it with you. I have used his press and have pumped 25 gallons of syrup through it with only a cleaning or two. I would look for a blockage somewhere in the system. He is not using a lot of DE (not sure what CDL has to do with it?) A lot can mean different things. The 5 inch is small it doesnt need a maybe a couple cups of DE total or it may be packed too full?? Need more info! What do the plates look like when taken apart?
Regards,
Chris