I was ACI certified for 10 years. Hate that test. If you have any questions, I'll more than happy to help. Biggest thing when you do the physical part of the test, if you miss a step, say you missed the step and do it. They'll likely not ding you since you caught the mistake. Idk if they still do the roll-a-meter test or not, but that was the one I hated the most. Heavy and awkward. Seems like the last guys that took it at my work said they didn't make them actually do it. They just asked for the steps involved. Hopefully it's the same for you