Hello to all, I didn't know this, or I was too lazy to look, but, as you can tell by Dons pictures, there is little room for error? The sight blades are a perfect fit and they are made / engineered from the original print, and are designed as to be installed from Right to Left, and are so tapered several tenths (less than .001") on the dovetail...
So, drive in from the right, ( muzzle pointed away) and back out from the left, never tap thru?... Best to all, til...lat'r....GT
