I like that idea - you get a well-made carbine that you don't mind shooting. Nice job! Yes, you can use the correct sight pusher on it, but you could use a hammer and wood dowel too.Drift it until its tight enough to shoot. Center the aperture. Fire two rounds at 25 yds. Assuming its shooting well right, tap it over. Repeat until its very tight and pretty much centered. now finish adjusting it with the windage knob.