For LR Questions that You Don't Understand (Blind Review Process)

How do you guys deal with LR questions that you don't understand during your blind review? I mean the ones that you spent over like 2+ hours (even over a day) and you still did not understand (that is, even after viewing Powerscore forums). Should I leave them aside for a while? (there aren't that many - two to three - on 6 PTs so far) Would love to hear from someone with a 170+. Thanks!