Hi Ron, The stylus bar should almost move under its own weight on the pin, but not quite, and easily with your finger. This is one of the critical areas, too tight you loose sound volume, too loose you lose sound quality. The pins should be tight in the shoulders. The shoulder assembly that is screwed to the weight is the second style of weight, the integral ones are the third and final for the standard DD reproducer and they do not work differently.
There are no bushings. The pin that comes from Expert stylus is 0.0252 and is the size of a #71 drill bit and I believe the Edison ones are 0.0272, the size of a #70 drill bit. Expert fits tight in the bar and loose in the shoulders, that is why I drill the Expert bar out. To properly fit a new Expert bar I use a #71 drill bit on a Dremel and a #70 by hand and keep on checking. If you have a freely moving hinge block, a good stylus, a good diaphragm or a Bogantz diaphragm, the proper size gaskets (only Wyatt's sell them) and you perfectly adjust the pin you have a reproducer that sounds halfway between an regular and an Edisonic. Dave had pin that was too tight for his bar and he used 600 grit sandpaper to size it. I was amazed at the difference it made, when I replaced the pin with a normal one the sound was the same as a normal one. Steve
