Tuning with jets, Power valves and an O2 guage

The GV needs to be tucked up and you will want to verify your pinion angle when it's done. That should require adjustment.
I think frustration got the best of you. Hopefully you can get it worked out and vibration free. Nothing is "traditional" when you take a driveline package the factory never offered, modify it in bits and pieces, and then bolt it all together. The process requires atttention to detail and persistance from the get-go. I hope you can find your happy place because if you think timing's too much - wait until you start the driveline vibration bit...