check all connectors
especially if using hoselock type.
Unscrew them all then do them back up tightly.
Also check hose and tubing on poles for any holes
or loose connections.
Check hosereel for any leaks
Make sure your Di bottles have water in
(I know someone who filled with resin but did not put any water inside)
If this does not work I would strip it down to basic and one by one chek leaks and pressure problem until I found it.
Its frustrating but well worth it.
Hope this helps a little
Russ