Definitely use the knopman. I got an 84. Their online tests helped because it tells you what chapters to focus on. As soon as you get into the testing center make 4 columns. One for questions you are 100% of, 50, 25 and 0. After completing all the questions as long as you have around 60-70 in your 100 column you are safe. If you don't, go back and review the 25 and 50 column thoroughly. I had a couple of questions where I remembered the answer from later questions. For the 0% use process of elimination to guess. Be prepared to see questions worded in ways you won't have seen in practice tests. Just analyze and convert to what makes sense to you. Good luck
Did you take the live or virtual class also?