This was very helpful. I wish I had seen it sooner. However, I called the factory this morning and was transferred to Carl Rohrbaugh directly. He walked me through several steps, much like the video. But something was definitely "bumping" (metal on metal). Carl was also concerned about my report that the trigger had initially stuck in the back position (this stopped after a little oil). Anyway, Carl asked me to return the gun to him for his inspection. I had mixed emotions about this; 1) I was starting to get attached to the little pup and did not want to let it go, 2) I'm sure it's something really silly and I'm going to feel like a dufus when the inspection is made, and 3) it costs 23 bucks to send it back (insured, or course), but 4) it will be nice to have the designer personally give it the once-over. Anyway, it's now "in the post".
In looking at the videos, two things come to mind. The outer recoil spring is said to have a front and back (close-coil and open-coil). I did not notice this with my spring and, when asked, Carl said there was no front or back. Also, I am very surprised that "smoothing" of the guide rod and end cap are suggested. Surely, with a gun of this cost, this smoothing would be taken care of at the factory.
It will be a week or so before I can report back. Thanks again for your help.
I remain,
PD (Potential Dufus)