RE: Rebuilt injectors
About four years ago I put in a set of injectors rebuilt by a local shop
that specializes in just that.  At about 120 miles one went bad.  After
replacing it with one that had just been pulled out things went fine.  When
I took the bad injector back to the rebuilder he was flabbergasted but after
checking he agreed.  He replaced the bad one with a new one off the shelf
and then rebuilt the other three for free.  And apologized about a dozen
times in th process,   saying that such occurrences were so rare in his
experience as to be almost non existent. But none the less, a freshly
'rebuilt' injector had failed.