What yours truly does to save a couple of bums? (5)
I believe the answer is:
seats
'bums?' is the definition.
('seat' can be a synonym of 'bum')
'what yours truly does to save a couple' is the wordplay.
I cannot quite see how this works, but
'a' is within the answer.
'does' could be 'sets' ('set' can be a synonym of 'do') and 'sets' is located in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for seats that I've seen before include "Chairs, stools" , "Parliamentary constituencies" .)