OP
Friendly advice: if you want to get the most out of this testing, close this thread and stop answering questions.

Assume that the builder has a specific test criteria in mind, including order of test and test parameters. All of these affect subjective testing, which is what you are doing. You writing up the detail of each ride is fine, but answering questions taints your observations.

If you ever want an interesting read, check out "Influence". Order of testing impacts results. You having a commercial relationship (her $20 repair upfront) impacts results. Whether you use your Boyd's or her first build as exemplar impacts results.

Write your notes as you go, and post it all at the end. Sounds like a great opportunity, if you use it as intended.