I think i have located the trouble. The two o-rings on that center section where the check valves are installed were broken and cracked. once i took off the covers to the check valves i found rubber in one and the valve was loose. Checked the other side and upon opening found an o-ring just laying inside. The valve was tight. When i took the valve out i found another o-ring on the valve stem where it was supposed to be but it was cracked. I ordered a o-ring kit on ebay
New OEM Genuine Hydro Gear 71410 Seal Kit. I will install it and see if this resolves my problem.