What are the greatest strategies to choose the right AC when you're down to two ACs?

Context:

I've been studying for the LSAT for a couple months now. Was a Feb test taker and came back with a 167. I'm locking in with a lot more discipline for the April test and am hoping to get my score into the 170s. (My Current highest LR priorities are Flaw, Weaken, NA)

The Problem:

My scores have improved and I've noticed that now the vast majority of questions I answer incorrectly I was between two ACs. One correct, and the other incorrect. My question is, how do I go about finding my weakness in picking the AC and how do I increase the likelihood that I will pick the correct answer, especially on test day.

Thank you all in advance for any help/resources/etc.!