Thanks @likkitysplyt
My main focus on that video was removing the regulator to fix a leak. I did break it down quite a bit but, I don't think I covered the hammer. There's an allen key slot in on the back of the block You'll unscrew it to change the setting or remove the spring. But, be careful! They have a tendency to strip out easily. If you feel too much pressure, stop! Add some heat to break the loc-tite bond and you should be good to go. Or, just hit it with some heat right away.
Tom