10401 Back In Service
After pulling stuff apart and putting it back together the engine was holding pressure just fine. I don't know what I did, but it's all good now. I also did a bunch of other stuff to the bus while I had it which includes changing oil, cleaning fuel and oil filterstuning up the oil pump and flushing out the lines, replaced the pin in the petal, and fixed the throttle to engine connection.
Since I'm feeling generous, I am going to let you have this bus back. If there is still an issue with the oil pressure or idle, let me know. I took it for a test run and everything seemed to check out ok, but you never know with buses.