OK, after much twisting & shouting, I made my action better! Now instead of a .02 difference in the action on the G string at the 12th & 24th fret there is a .005 difference & I was able to lower my E string from a .08 to a .07 & G string from a .07 to a .065. So I have lower action & it is more consistent above the 12th fret. I really cant say what fixed it other than I tried tightening the truss nuts adding more backbow which didn't help, then loosened them all the way & pressed down on the neck slightly to give me more relief, then snugged the nuts & went 1/4 turn more. After all that I set my action back where it was at a .07 on the G & .08 on the E & had no buzz so I lowered both until they buzzed then raised the bridge 1/4 turn. Now it's all good! I know that was unorthodox going to both extremes on the truss rod, but it worked!
Thanks so much for all your comments & to Keith H for the phone call & personal insight on your short scale basses! It's great being a part of such a supportive community!