Just received a full set of the steel replacements. Great work on them Renee! Just 2 minor flaws, not on you but the material. There is no shrinkage on the steel parts after they are made like on plastic versions. So there is a big issue with stacking tolerances (very tight fit, a reduction on the dimensions by about .001-.002). Second Stainless and the cheap Logitech screws do not mix. As in you will not be able to use them. Inner holes need tapped for a replacement machine screw. Or you can do as I did and epoxy it together. So in closing the steel parts are no drop in and if you are not a DYI person. Go with the other material options. And in closing GREAT WORK Renee! and thanks for drafting these up!