RE: arrow placement on target
Just a note that I only move the rest away from the centershot of the bow (moving rest right to left) only after trying all other possible fixes to the problem. If you feel there isa weak reaction, try decrease bow poundeage, cut the arrow shorter, select a stiffer spined arrow, decrease weight of the tip (you are at 100, so I would go with any less weight).
Moving the rest may be the easiest fix in tuning a bow, however, the closer you can be to the centershot of the bow with the bow in tune, the better off you will be.
I've always been more in favor to tuning the arrow to the bow, then the bow to the arrow. FWIW.