Since there are many Rx "experts" in so cal perhaps for more than $150 someone will do it for you "while you watch". You are then free to do it yourself down the road, and experiment with your own settings.

7's only?

MazdaTrix?

R&R Rotary in Upland? They do a lot of drag racing stuff, so they may use Ford 9" stuff. Perhaps they haven't always done so and may know how to do yours right. They also don't have to race against you and therefore might be more willing.