RE: p.o.i jumping 6" to 1 foot at 15 yds
I was getting the exact same thing, I would definately "creep tune" and possibly shorten your drawlenght slightly, maybe 1/4 " or so by adding a little twist. The creep tuning alone should take care of the problem but you should also address the reason that your coming off the wall which is probably a draw lenght that is slightly too long.
Good Luck
BD