u/thatwentverywrong

I had my first go at fitting a guard today. It did not go well. I tried hot fitting it but the punch I was using was a bit big so the hole was too deep so it rattled. Then, I ground down the tang so it could slide further on, except it is now narrowest blade side. To top it all off, because of the moving guard, the scale holes were off so I had to redrill them. How do I go about doing this properly in future?