Hi everybody, so iv got myself in a pickle. I was attempting a helicoil repair a valve cover stud. I neglected to use a non-tapered tap and when I installed the helicoil it followed the now tapered threads and essentially I have a tapered helicoil. So I'm thinking if i can remove that helicoil without damaging the new threads then i can grind the taper off my tap, finsh the job and reinstall a new helicoil. My question is how do I go about removing the helicoil? Iv seen the special arrow head shaped tool that grabs and twists them out but I'm worried that this coil is so tight in there because of the taper that might not work. Also seen a video of a guy just picking one thread out then peeling the whole thing out like a slinky. Any tips greatly appreciated.