This was a mistake I made when I started fixing up my Dubl Ducks. I made a few sets of scales only to find out some didn't work. Even razors made by the same manufacture,same model, require a special fit for each razor. The blades are different lengths and widths and the pivot,,,,well it could be different also. You can swap scales out and use them but the fit is not always right. And then what if you buy all the stuff and the tang is slightly bent? Your razor will never close in the center without adjusting the scales. If your going to learn that you might as well learn it all :<0)