ok thanks for the info,,,
1 1/2 or even 2 inches is ok for the arrow pass,, its about how the arrow flies, not the measurement,, or where the pass is,,,,
try leaving the arrow 30 inches and see what it does, cut shorter if needed,,, 50# spine should shoot fine out of your bow cut to the right length,,
put a piece of tape or mark on the arrow to make sure you are hitting the same length every time,,
the bow should be balanced in your hand,, and that would probably make the arrow pass 1 or 1 1/2
make a string wrap or mark at the arrow pass so you shooting the same spot on the bow every time,,
I think its gonna shoot fine,,