Wiktionary
pick holes
vb. (context idiomatic intransitive English) To find weaknesses, errors or imperfections (in)
Usage examples of "pick holes".
You're not the only person who can pick holes in an expense account, and I'm sure your colleagues will be very interested to know where you got the money to buy that big dacha outside Sevastopol.
But the nuclear camp from Marshall, led by Udet and Conlig, didn't find it hard to pick holes in the case.
In a classic good-cop, bad-cop pairing, he was the friendly one who tut-tutted, while his partner, a man named Duffy, was the belligerent officer who tried to pick holes in their story.
I don't think the old man ever believed our story, but he could never pick holes in it, and it held up.