Paul,
I am happy to hear that you and John are "working this out" and hopefully all involved can "moving forward".
However, Paul, please do not try to present yourself as the victim here. You posted the video where your mechanist clearly stated that there were many deficiencies in the Burtz product that could cost thousands of dollars to correct. These "findings" did not corollate with the experience of other professional builders and there were many questions about how your mechanist came to the conclusions he did. Of course, it is possible that you did receive 2 defective engine kits and your machinist did come to the correct conclusions.
Because the conclusions your machinist made, the questions about how he came to these conclusions and his remarks about the estimated cost to correct these "deficiencies", the quality of the Burtz product has been brought into question. In my opinion, this video did harm to the Burtz product.
It seems to me the Burtz people are doing everything they can to confirm that in fact these components either are not within specification, or they are within specification. It would be very easy to have a qualified independent third party inspect the components and report their findings. I believe the Burtz folks have proposed this.
The Burtz folks need to have this issue resolved. If they do have a problem, they need to know it and remedy the situation.
Your reputation is also in question, and you need this issue resolved. if your machinist did not correctly evaluate the components, you need to know this and correct the statements made in the video YOU posted.
The Model A Hobby deserves to know exactly what is going on. For the good of the hobby, this situation needs to move forward.
Again, please, for the sake of all of us, do not represent yourself as the victim here. You posted the video that started everything, and it seems to me you are the one holding up progress to bring this issue to a conclusion.
Again, this is just my opinion,
Chris W.