The other technique finally helping is another run-through (9)
I believe the answer is:
iteration
'another run-through' is the definition.
The definition suggests a singular noun which matches the answer.
'the other technique finally helping' is the wordplay.
'the other' becomes 'it' (old-fashioned UK slang for sex).
'finally' suggests the final letters.
'helping' becomes 'ration' (a ration is a serving or helping).
The final letter of 'technique' is 'e'.
'it'+'e'+'ration'='ITERATION'
'is' is the link.
Can you help me to learn more?
(Other definitions for iteration that I've seen before include "Repetition" , "Repeated performing" , "Repeats" , "Repeating" , "Reprise" .)