question about bass set up
So I have a Hagstrom FXB220 and it is a 4 string bass. This is the bass i use live all the time, and since my band plays in half step down i never change the tuning for it as I have another bass for standard. So, it needs a set up, and i am wondering, when doing the set up, do i leave it tuned half step down, or do I do the set up with it in standard?
Also, for the truss rod, my bass has an allenkey head on the headstock, and one where it joins the body. does it matter which is used for truss rod adjustments? this is important because the whoever owned it before me has stripped the adjustment head on the headstock. Thank you very much !