been messing with my Onza trying to get some 10 grain thunderheads to shoot the same as the field points...turns out 400 spined arrows at 28" put he broadhead to the right and if I moved the rest really far to the right(should be left), I got some good results...yet this can't possibly corrrect as its no way lined up with the string at this point.

next i swithed to a 29" 350 spine and reset the centershot....arrows ends up in the center, but this time is high with the broadhead....dropping the rest down pretty far seemed to get good results but once again there's no way that could be correct as the nocking point was 3/8" above level and the vanes looked as they could hit the self....however, did notice my arrow wasnt level with the berger holes, so I reset the rest and will start over.

question is.how far should you move the rest from centerline before you decide the arrow is not spined right?