You're being extremely diligent in this. Kudos for continuing to pester Blackstone and Amsoil.
Results were good? Big deal if those results were for another car, you paid for results from your car.
Since you're getting your oil from Amsoil any way, maybe consider firing Blackstone and getting uoa's from Amsoil. They're ~$10 cheaper than Blackstone when TBN is included.