I have two X Force bows that are exactly the same, 53 / 54 LB, 28'' draw, Dropzone rest, loop ect...
I set up both bows myself.
One bow tunes perfectly with a Beman Hunter 400 shaft, Blazers, 125 gr. tip, total arrow weight is 430 grains.
The other bow won't tune well with that (or a couple of other) arrow(s); it likes, Redhead 2000 shaft 4'' feathers, 85 gr. tip, total arrow weight is 325 grains.
Both bows have the rest very close to center (marked on the riser) with the nock / loop slightly high.
Bow set up is basically the same, but the arrow that tunes best is very different.
Be willing to try different things when paper tuning.