Well, I didn't have a Dremel so I used a file to remove the pin bit by bit.
I had to file the wood down just a little to get the new pin through. It has a little bit bigger radius on the outside of the receiver and the top of the stock was in the way. I never cleaned up the stock so it doesn't look like I did anything.
I got a Tech Sight for my Yugo. I hadn't planned to, but the sights were so out of wack I was 2 foot off to the side at 100 yards. With the tech sight, the front sight is all the way right and the Tech Sight windage is almost all the way left. It does shoot the center now though. I was keeping everything within 8 or 10 inches at 100 yards with the casual shooting I did do. I left the leaf spring on as it didn't seem to be going anywhere. I don't notice any noise and nothing obscures the sight picture.
I only have 20 or 40 rounds through it with the Tech Sight so I can't say I have had much practice. I am a little low on 7.62X39 so I won't shoot it much more any time soon.
The only quirk I have is I can't seem the keep it 100% tight. After shooting a few rounds, it has a little up/down movement. It hardly moves at all and it doesn't seem to affect the sight picture at all so I stopped trying to adjust the brass pins anymore. I figured it just wanted to move with the recoil a little.
Overall, the sight radius is a whole lot better now. I was disappointed at first when I found the old sights so far off, but I feel like I have a good rifle now.