Helicoiling wont get the bolts out? Helicoiling is for of you've stripped the threads, you drill the hole out slightly bigger, then insert the helicoil - a strong, steel thread. No chance of stripping one of those. If you're confident enough, get a small drill bit, and drill down the bolt, then get the a slightly bigger drill bit, mind you don't drill the threads of the hole out! And it should just fall apart...