mjz,

You seem a pretty observant person, and those observations most likely declare what the issue is. I don’t believe, although I could be wrong, and I know you’re curious...anyone here is going to tell you directly what they believe the issue most likely is, let alone the “how’s” to fix the “why’s.
You’ll most likely learn a bit more when the tech come out again.

Oh- very daring of you to be in the cabin during the “learn run” process! If you have a moment, read the discussion titled, “Discuss Close Call” and you’ll quickly understand just how dangerous our trade can be. Riding in the cab during a “learn run”? I would not recommend it.