Need help with 2, please.
29A Clue: It sounds familiar ... familiar (4 letters).
Have E _ H _.
14D Clue: "Hasta la _____!" might've been an Arnie buzzword in apaghetti Westerns! (5 letters)
Have P _ S _ _. I think the answer to 21 A is CAST which would make the last letter S (P_ S _ S)