Broken Extractor... Rebuild or Replace, any recommendations please?

[1917garkunkel]

Hello,

Well I got out to the range and fired the 1917--the first time fired in 20+ years.

I was pleased with the accuracy. I tried Blazer and Sellier & Bellot 115 gr rounds. I found the Blazer to work a little better, stove piping about 1 out of 6 shots.

When i took the gun apart after shooting I noticed this nastiness on the business end of the extractor (see pics)

I'm surprised it ejected at all!

So I'm wondering if any of you have ever had a piece like this to be built up with micro welding, then machined it back down to proper shape. I think this is my preferred route.
Aside from that, i could simply replace it. What do you all think? I'd appreciate any ideas on rough cost for these options, if you know.

thank you everybody!
-Ross