Apparently the increased boost levels had little or nothing to do with the engines’ running condition.
I decided to remove the Turbo in order to readjust the wastegate. This may seem like overkill considering what a PITA it is to remove. But believe me, it ends up being easier to do it this way instead of fiddling with that %#&* retaining clip when you have XXL hands. Especially when those hands are swollen and sore from all the wrenching. Not to mention that all the gaping flesh wounds are now scabbing over -- that can make it a real joy to try working with your hands.
I had everything reinstalled and when I went to put the wastegate hose on I discovered that it had a *huge* tear in it. Based on the size of the tear, it would appear that I was running with the waste gate completely closed (!). No wonder it ran so good. Shades of the C-111.
So now that I have inadvertently dialed it back down to a paltry 8.5 pounds of boost, I guess it's time to finally devise a good manual boost control system. It will be a cold day in Turbo-exhaust land when I pull this thing apart again!
RTH