Good Ones:Percent add-on ILE
Pockets picked at a deli? PITA
Choir section APSE [same clue used a few times in this puzzle, but this is a different spin]
Strikers’ org.? PBA [bowlers]
Put away dishes? ATE
Shaver PLANE
It’ll never fly EMU
USA rival TBS
Theme: animals owned by presidents along with the animal sounds clued as advice
By the Way:I was wondering if the advice given by these past presidents’ staffs would be as good or even better than the advice of Mr. Obama’s staff.
Who knew?:Coolidge had a hippo, Jefferson a mockingbird, and Harrison a goat
Some Nits to Pick:Too amusing for words RICH [they don’t really mean the same thing: the former is sarcastic while the latter is praise, though RICH can be used sarcastically
in the phrase: “Oh, that’s rich”]
“Not again” OHBOY [Not again! Another idiom stretch. If I had written, “Oh, boy! Another idiom stretch,” the meaning would be different.]
EISEN
ENERORATING:

Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun