Rereads slashers, sabotaging full run-throughs (5,10)

I believe the answer is:

dress rehearsals

I'm a little stuck... Click here to teach me more about this clue!

'run-throughs' is the definition.
(I know this)

'rereads slashers sabotaging' is the wordplay.
'sabotaging' indicates anagramming the letters (I've seen 'sabotaged' mean this).
'rereads'+'slashers'='rereadsslashers'
'rereadsslashers' anagrammed gives 'DRESS REHEARSALS'.

'full' is the link.
I am not very happy about this link. It may belong to another bit of the clue.

Can you help me to learn more?

(Another definition for dress rehearsals that I've seen is " full-scale practices".)

I've seen this clue in The Irish Times.

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