Also as one of the early reviewers of the MT07, I didn't really consider the thread roughness issue, though it does make itself evident in the detailed pic of the threads I have in the review. I believe I did notice the thread discoloration, just didn't think it was an issue in my unit because a normal amount of Nyogel did a good job on it, and as became apparent, mine wasn't as bad as others that followed.
The battery setup with the limitations has been very disappointing though, even though I mention it in the review, but probably didn't make it more noteworthy. The performance on my unit was quite good, so I didn't know what was yet to come out of all the performance issues that eventually became apparent - classic hit & miss chance, roll of the dice whether you get a good one or bad one.
Overall I feel this was not a good rollout for a new company with a first product. They clearly should have taken more time in testing and getting feedback from early BETA testers,and had better quality control. It's expensive and time consuming to do proper pre-production rollouts and BETA testing, and it's rarely done in this field, apparently. I was hoping I'd get my unit before production started so my immediate feedback could have been considered, but I would have missed the performance problem anyway, and I feel this was the worse issue.
I'd love to order a MT03 at this point, but only if it's guaranteed it would be a "good" one, and I have no clue if that can be guaranteed by the resellers. The pictures are outdated, nothing noted, so it's a guess.