I have had great luck just popping the chrome piece off of the lock housing. A flat screw driver inserted slightly into it, and then a bit of a pry will pop it right off. Very easy to press on again too. I just use my vice and a socket that fits over the chrome piece with a rag in between. I have done several like this. I tried to get mine off with procedure shown above. Must have had an hour or more into it and gave up. My method took about 10 seconds. Good luck!!