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Stripped Hammer Screw Adjuster

Heat it up, probably had some locktite on it. 
Yea they are fragile but really a good design In my book, I'd rather replace a 2.00 part that have to replace the reciever block!!
take some bent needle nose pliers and work it back and forth, it should come loose. If not a small cut-off blade on a dremmel will do the trick. Start in the stripped Allen head hole and cut as close as possible to toward the threaded block, being careful not to cut into threads. This will provide some relief for it to come out. 
 
If you have rounded a Hex or Allen head bolt,try using a Torx bit like these.Find the size that needs to be forced in the rounded head and unscrew.Works sometimes..
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