I looked up the ingredients in the Quikrete Mason Mix Type S mortar you used; it's 3-1/2 to 4-1/2 parts masonry sand, 1/2 part hydrated lime, 1 part Portland cement (by volume). There is not nearly enough lime. It's also the second hardest mortar you can buy. I've found examples of Type S mortar dried and cured, and it is grey, not white.
I'm concerned about the effect that this hard mortar will have on my brick. I'm also disappointed; I had several bids done on the house, including one by a man who wanted to use a modern mortar (such as you finished the job with). His price for the house was $600 to $800. We decided that paying the extra money was worth it to us to have the integrity of the brick ensured. Of course, that price didn't include the patching of the bricks, which does look beautiful and I could see took work to look as good as it does. I'm not seriously concerned about the chemical composition of the patches, either, as they will simply pop off if it is unsuitable.
I'm wondering what we should do about this. As it stands, I'm looking at spending next spring chipping out all of the Type S mortar and replacing it with proper mortar (and hoping that the freezing/thawing over the winter doesn't hurt my bricks first).
Thank you for your concern on this issue; I'll wait to hear from you before I send payment.
Tiny Old House