Apparently the detachable handle I got with my Model1 kit comes with an NM rear sight... the finer adjustability is cool, but the aperture is just too small. So rather than shipping stuff back & forth, I'm looking for either a standard A2 complete (with the 6/3 markings), or a bigger/better aperture that will work with the NM fine pitch windage screw. Can someone recommend a good source for either option? Might you have something in your "unused/old parts bin" that you'd be willing to drop in the mail (to Texas)? Looking to find a solution between $10 and $20. Lemme know. Thanks!