thanks engatwork, My car sat fine overnight, no bleed down. My next step is to spray and check the fittings at the manifold block and then all the lines. It did seem to help cycling the solenoids with the foxwell code reader and filling/deflating the system. I'll post the cure if I find it.
My system really bleeds down quite quickly when it does but then at times not at all. To me this indicates a sticky solenoid.