Susan turned back with heavyweight to find station (6)
I believe the answer is:
euston
'station' is the definition.
(I've seen this before)
'susan turned back with heavyweight' is the wordplay.
'susan' becomes 'sue' (I've seen this in other clues).
'turned back' shows that the letters should be reversed in order.
'with' means one lot of letters go next to another.
'heavyweight' becomes 'ton' (I've seen this before).
'sue' written backwards gives 'eus'.
'eus'+'ton'='EUSTON'
'to find' is the link.
(Other definitions for euston that I've seen before include "train here?" , "rail terminal" , "North London terminus" , "Brown seaweed" , "London rail terminus" .)