I never dyno tested for a living but it would seem to me that a dyno tester who saw something amiss would suggest some troubleshooting a bit. Changing jetting, using a known good dyno carb, etc. When I went to have a dyno done on my car it was just for assessment on a dynojet. The owner and tester suggested that timing may be too far advanced and he would love to do a dyno tune and not just a test. He was a racer and knew his stuff. I will wait and watch attentively how this pans out and I hope to learn a lot from this. I am speaking not just what was wrong but how to navigate the build, test, retest etc. Good Luck.