I am creating an Alchemist in Pathfinder and want to take the Tenticle Discovery. My DM told me that, with this extra "arm", any armor that drops will not fit me. What are some Pathfinder rules that will let me work around this? I was thinking of getting Artisan Tools and the Craft Armor Skill, but I do not know how effective that will be for modifying existing magical armor. Any ideas?