Parallel Reasoning Tips?

Hey guys, I've noticed more parallel reasoning questions on recent PT's, and, with my luck, they're also the only ones persistently giving me trouble/costing the most time. Does anyone have a particular method that helps them with these? Like is it better to look for similarities in the conclusions, premises, or overall structure first? Also, has anyone noticed common traps writers put in the incorrect answers? I find myself stuck between 2 and choosing the wrong one. Thanks!