Thanks to the many, many responses to my inquiry a week ago and again
yesterday about my running problem.  I turned out that the problem was two
fold.  As I had suspected, one of the rebuilt injectors had gone bad, but
also, the O2 sensor was bad or going.  After the O2 sensor was replaced
there was still some problems, traced to the bad injector.  With that
replaced, the throttle switch needed adjustment.  At that point I'm running
just fine.
Thanks again for all the help offered and my hat off to those that had it
right.

--
Loren Busch
"I ordered a feast in the hope that you would come."
"I came in the hope there would be a feast."
(From "Monument" by Lloyd Biggle Jr.)