Anything left for this one?
Firstly, you've adjusted the melee quills with Point Blank Shot in the Attack line, not the ranged quills. It's also missing the +1 damage for PBS. It should be:
Attack: Bite +5 melee (1d6+2) or tail +5 melee (1d6+3 plus quills) or 1d4 quills +5 melee (1d3) or 4 quills* +6 ranged (1d3+1)
Full Attack: Bite +5 melee (1d6+2) and tail +3 melee (1d6+3 plus quills) and 1d4 quills +3 melee (1d3) or 4 quills* +6 ranged (1d3+1)
Secondly, the "(see Defensive Quills, above, for the effects)" in Shoot Quills should be "(see Quills, above, for the effects)", since we got rid of the Defensive.
Thirdly, its Will save is 2 too high. It should have either a "Dire" SQ to give it a good Will save or Iron Will as a bonus feat. I prefer the Dire option:
Dire (Ex): A quill is considered to be a dire animal for the purposes of saving throws.