In each clue the wordplay has an extra letter
2d Greedy person, old maid holding advantage, maybe begged drink in Argyle (8) H???????
23d Disposes of more than old-fashioned bows with varying lengths (8) ??T????S (not certain of the T) Extra letter is "L"
37d Small US municipality(not Los Angeles) base (4) ???E
extra is "G"