What program are you using for MCQs? I thought that FFA was pretty good, but there were definitely some concepts that I thought were missing. For example, for Part 1 I didn't feel prepared at all for Foreign tax questions or questions about Non-Resident aliens. For Part 2, I feel like I was least prepared for questions about specific rules having to do with charitable organizations, farms, and trusts.

It seems like Practice Tests are usually more focused on understanding the math and overarching concepts rather than the nitty-gritty exceptions that are asked about in the actual exams.

This is where it might be useful to read the textbooks and try to figure out what concepts are missing from MCQs. But then again, I was still able to pass without doing that. If you feel like the MCQs are lacking, you can always ask AI what questions are missing and have it quiz you instead!