Tom....like you, I started out bracing my bow from 7 1/2" to 8", which is pretty much standard for the majority of todays recurves. The bow shot good anywhere in that range.
In my talks with Brian, he suggested bracing it at 7 1/8".....bingo.... My bow stays braced at 7 1/8".....it is a bit quicker, just as quiet as any other brace heighth, and performs best. Run it down to 7 1/8" and se what you think about it.
I prefer a lower brace on my bows and was pleasantly surprised to find that the bow shoots best with it set this low....another plus in my book.
Tuning my bow....well....there were no tuning issues at all. I do shoot off a rest, so that simplifies things a bit. I have shot arrows as light 2013 aluminums, up to Vapor 4,000, and everything in between, they all shoot good, and that's a pretty wide range in spine out of the same bow. My arrow selection boiled down to simply whatever I wanted to shoot. I'm hunting with 60-65# POC shafts, 160 gr Ribteks, but I could easily be shooting 2016 or 2018's with the same accuracy.
Don't anyone doubt that Brian has this bow figured out down to a T until you shoot one for yourself.