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?