You should check the tension bolts on the main ram assembly for tension. There are four (4) and they7 do tend to stretch, which allows the upper and lower plates to separate and thus they blow an o-ring and all ends in operation. You could check all the clearances, though we feel you probably have a blown system. We have written several times about this application. You can replace the stem bolts, and have custom ones made your self and install larger stem bolts. Also replacing the o-rings at that time. You can also have Detwiler put the new system in that the new owners went to after they purchased the company.