i just got a new ruger BLACKHAWK in 45acp/45 colt convertible and the rear sight blade broke- entirely my fault- dropped the thing on the concrete range floor and the right side leaf broke off- just the way it hit- i can get a new blade out of quebec for 3 bucks plus ship and taxes, but how do i get the old broken blade out?- i've had the windage screw out, the blade goes all the way over to the right, and i know there's a spring in there - probably a simple enough thing to do if one knows a trick- i really don't want to ship it to quebec for just a 3 buck part that somebody can install in 10 minutes - also does ruger make various size rear blades?- i've been shooting this with 45 acp and i've got the elevation cranked up all the way and it's still shooting 5-6 inches low and right- i'm thinking i need a higher blade- i'm using a 200 grain bullet ahead of 6.2 of ww231- worst case sceneario , is there a gunsmith in calgary that can do this?