I'm sorry that you had an issue with your new alternator while you were out of town, and, as you now know, the NAPA Autocare warranty worked well - nationwide 2 year parts and labor warranty. New alternators do fail occasionally, I'm not sure what the replacement shop told you, but I'm not convinced that a "dropped bolt" would sit on top of a "replacement bolt" for two weeks, and then short out - that kind of sounds like a service advisor trying to make up a smart story - sorry that you had to deal with that.
After speaking with Wyatt, we determined that a bit was "lost in translation" between himself & the telephone reviewer. We did fix the leaking power steering rack & pinion that Wyatt brought the vehicle in for. Wyatt mentioned an intermittent issue with the oil pressure gauge. We discussed that the problem is likely either the gauge in the dash (expensive & time consuming sending the instrument cluster off for repair), or the electrical sending unit on the engine (quick & relatatively inexpensive). The decision was made to install a sending unit & hope that the issue is solved. That did not fix the problem, and Wyatt told the reviewer that he wished that it would have, as it is very inconvenient to return the vehicle to the shop, & have the instrument cluster removed and sent out for repair.