First-class spinner following helpful hint (6)
I believe the answer is:
tiptop
'first-class' is the definition.
(I've seen this before)
'spinner following helpful hint' is the wordplay.
'spinner' becomes 'top' (something that spins).
'following' means one lot of letters go next to another.
'helpful hint' becomes 'tip'.
'top' after 'tip' is 'TIPTOP'.
(Other definitions for tiptop that I've seen before include "Very fine" , "The pinnacle of perfection" , "cracking" , "The height of excellence" , "Capital" .)