First thing you'll notice is the full-width jack pushing up against the square knuckle that is apart of the hammer body. This action still has the double entrapment like modern piano actions, but the geometry is abit different. These parts are no longer made, so in order to update this action, I'll have to replace everything with modern era parts. That's gonna change the actino geometry abit, but it shouldn't be a problem. I'll continue to post more pictures and my progress as things move along.