I know this wasn't addressed to me, but at the most basic level, you've got 2 minutes per verbal question, and 1:45 per quant question.
Obviously some questions will take less than their quota, some questions might take more.
The hard-cap per question, doesn't really apply. It's all depending on where you are on the exam, and how much ahead or behind of schedule you are.
For example, if I'm on the last verbal question, 5 minutes ahead of schedule, I can take 6:45 on that question and not be worried.
However, if I'm on halfway through and I'm 5 minutes ahead of schedule, I'm probably not going to feel as comfortable taking more than 3 minutes.
The best advice I've been given is 'when you reach ~2 minutes, are you approaching a solution? or are you fumbling around? If you're fumbling around, guess and move on. If you're approaching a solution, solve it and move on'