terrible twos quiz

[x-ray]

I am trying to complete this quiz, but still have seven questions unanswered.
31. get letters from this point of sale terminal operator
(9)
46. resembling a squirrel when mixed they could be said to be cygnets (6 3 6)
54. place to lock up carousing singers inside (4 4)
62. TT worn out (7)
82. mcmanus took an old us airline in for samuel (4 5)
87. add up pulses evenly making two beats to in a bar (5)
89. the devil gets back from a barbeque dinner party (5)
Any clues most welcome, although I realise some of you are looking for the same.
Thanks.

[FoxLee2]

postworker has one too many letters.

Although it said there are 20 answers with two in them, it also talked about red herrings. Maybe that is a red herring in itself!!

[wymondham2]

Thank you Chryasor for 55....obvious when you see the answer! Have only jst got in and your othe questions have already been answered!

[smouse]

I asked ages ago and there are 21 two words