Couldn't find the exact passages for the oil supply, so I played around with the 3 pt hitch. Up,down,draft control min,max. Every once in a while it would give pressure to the SCV. After a few cycles, the SCV worked flawlessly. There is no reason for me to remove the rockshaft control housing at this point. The 3 pt. never gets used anyway.

So the exact cause is not determined, but I'm betting on a stuck valve which worked it's way free.

I knew it wasn't my SCV adjustment. I can sleep better now. ;-)

Thanks for the help guys. I love this site.