I don't know if this will ease anyone's nerves who isn't scoring above 65% (yet). But just keep in mind that it's obviously an excellent goal to score as high as possible on the MBE because it can be your cushion. But that's not necessarily practicable for every person. Some people, despite however much MBE practice he/she does, does not seem to kill the MBE. If that's you, don't panic. Chances are you're the better essay/MPT writer. Using supplements like Adaptibar are an awesome tool, and you'll definitely see improvement, but if you know deep down that you're still more likely to write pretty good essays and MPTs, don't neglect that. Because just as a strong MBE score can save you, so can a strong writing score. This is especially true in UBE jurisdictions where the score breakdown is 50% MBE / 50% writing. I took the UBE for the first time time in February 2017 and knew from the get-go that the MBE was not going to be my strong suit. (I scored a 127.3 in July 2017 taking a different state's exam). Granted, I knew that I needed to improve, but even with that low of a score the first time I was still only a couple of points from passing because my writing scores were above average. So when I opted to study for the UBE, I almost exclusively used Emmanuel's book to learn some strategies for the MBE and just read outlines for BLL. I didn't buy Adaptibar because I made a 'business decision' to try to raise my MBE score just enough so that with above-average essays/MPTs I would be in good shape. I knew that my time was better spent honing BLL and reading past essays because I had a good chance of excelling on those. In the end, I read the entire Emmanuel book but probably did no more than 250 or 300 MBE questions. (I was also working full-time and had to make strategic concessions. I wanted do more but really couldn't based on how I designed my study schedule and priorities). In the end, my MBE score was only a 137.4 and I ended up with a 281 overall UBE score in a jurisdiction where I only needed a 266. So, clearly, my emphasis worked and my essays and MPTs were above average. I wanted to raise my MBE score just enough to feel safe knowing that my writing score would be higher. That 10 point jump from a pretty bad score to an average score was what I needed. (Also keep in mind that the mean February 2017 MBE score across the nation was the lowest it has been in history - a whopping 134).
Long story short, know thyself! Keep doing MBE questions and using Adaptibar (I got it this go-around for a different state and think it's super helpful). But if you're not someone as quickly seeing high scores, make strategic decisions on where to best use your time. This is especially true for people who are not studying full-time.