Two bolt issues
I have an old bike I'm trying to sell where one of the bottle cage bolts is broken off a little below the head. I've drilled a hole (of the recommended size), but I can't get my screw extractor to grab - even after rubber mallet-ing it in, it just spins in the hole. I've been using a crescent wrench to turn it. Any ideas? Am about to take it to an LBS and ask for help, because a friend expressed interest in the bike and I don't want to sell it to him with broken bolts.
Additionally, I'm trying to install fenders on the front, but the (recessed) brake bolt is 100% frozen. It's not stripped, but no matter how hard I crank on the allen wrench, the wrench just bends. I've tried Liquid Wrench to no avail.