Any Ruska experts out there? I have an old Ruska pump part of the 40,000 PSI bench that seems to be having a fit. I am having a hard time building pressure and when I opened the line to the overflow oil a lot of air came out. I tried bleeding the lines making sure no air was in and started again. Same issue and when I opened it again aton MORE air came out. Could the pump be putting air in my lines somehow?