Hydraulics pressure not holding and clamp/mold dropping.

Timed the drop of the clamp, over a minute & also over an hour, etc on both machines (clamp dropped from 100.6 to 96.5 in period of 1 minute, mold fully closed in 46.5 minutes). 1.Replaced brake valve (issue still the same). 2.Checked oil level. Replaced oil and oil filter (issue still the same).3. Re- adjusted pressure on brake valve from 20 bar to 25 bar (no change, issue still the same). Any suggestions what could possibly be wrong?

Hi Elvis and welcome to the forum,

Sorry I can be of any help on this one, hopefully some others with more experience can give you some ideas or pointers...