Those red cubes are an embarrassment to the producer of this device.
After dozens of complaints of users of leakage and pinpointing the cause to a thread cut
TOO SHORT , nothing has been done about it.
SHAME SHAME on the producers of the red cube to continue to allow such shoddy workmanship to continue on an otherwise fine piece of equipment.
I used Pro Seal to glue the nipples into the cube, no more leaks.