At first, I misunderstood the unusual feature of the puzzle, spelled out in circled letters, and thought the entire entries (almost anagrammatical!) themselves were supposed to be in alphabetical order, but when Horace clarified the situation for me, I cried OHO! The two features - a set of six words whose letters are in alphabetical order and a natural language phrase explaining that fact within the puzzle - make for a very nice combination.
In the mid west, I had the beginnings of two names I didn't know (29D. HGTV personality __Yip and 30D. Eddie ___, subject of "The French Connection", but I guessed ANNA for 43A. Actress Kendrick of "Pitch Perfect" and all ended well. :) The AVERSE was true for 28D. "Fernando" group, which I didn't have any trouble with (ABBA) and I loved BRAY (39A. Sound like a jackass). There were other excellent "B" words in the grid including 38D. [Wrong answer!] (BZZT) and 49D. Elegantly designed trinkets (BIJOUX). Other fan favorites are CHINTZ (45A. Fabric with a cheap sounding name), PRIOR (13D. Previous arrest, on a rap sheet) and IDLER (40D. Couch potato). The more I review it, the more the excellent clue-to-answer exactness of this puzzle, the more I am WOOed by it.
The puzzle has a number of three spots, but happily, very few are filled with abbreviations, and one old standby (AAS) was entertainingly clued (6A. Batteries in mice). My SUI generis FWOE today was at 44A. For some reason, I entered CsT for Summer hrs. in Chicago. GAR!
In the south west I couldn't imagine what the specific word for fixing a pump would be, but, as I'm sure Mr. Haight intended, I had the wrong kind of pump in mind. Ha!