Re: How did they find it?
Step 1: seal each compartment, monitor each compartment for pressure. This identifies the compartment the leak is in.
That was the basic technique . A 2mm hole wouldn't generate a draft that would stir dust or light objects.
I'm surprised El Reg didn't mention that prior to taping the puncture, an astronaut (Alexander Gerst) plugged it with his finger.
Biting the hand that feeds IT
