I replaced the oil bypass spring with a new one (HD) and installed a zippers shim kit . I am now seeing hot idle pressure no lower than 24 psi. which I like compared to the fluctuations I was seeing before. But, pressure climbs to around a steady 52 psi at cruise speeds. Is this excessive and if it is what's the downside of running this high of a pressure? I've emailed zippers but haven't heard anything back.