Bob - noted. I generally feel safe when following your instructions. I am used to doing checkering on "other" firearms, where the checkering is about 3:1 length/width, did some at 4 or 5:1, but you don't get as good a grip with that. 3:1 or even 2.5:1 looks and feels good.
Still feel that they could have used a thinner sear spring and placed it out a bit further than right by the hub. Oh well, I didn't design it, and never had to use it. It is what it is.