Got mine done today (after 11 years of ordering and holding the modified spacer and not returning the core

).
One comment I wanted to make is that I am at ease with my Chinese bearing (ordered twice from fleabay....received NOT what was advertised twice). Now that I pull the tire (I have done it many times before) I am reminded that the inner bearings in the wheel aren't what I was replacing, simply the bearing that carries the pulley. So...if the Chinese pulley bearing starts to act up my rear wheel isn't going to kick sideways and sling me into a ravine.
Thanks Armen. Core will be in the mail Monday if they are open.