That is what is going on . You not through.And some difficulty in understanding some concepts .Thats what is going on .
No need for new q- bank. You can't do Uworld correctly and you want to add more work to the current load by adding another Q- bank.. Your thinking is incorrect. You can't see it.
Do FA again .do Uworld again . In your uworld tick off what you want to do again. Thats now part of your FA.
Master these two first . Then do NBME . You will see a big difference in score . For the better.