Pilots for K Line EP 5

What's wrong with a metal replacement?

The K-Line EP 5 pilots are made of very thin castings, which means they tend to break.

Not so much that they're thin, but the castings were defective and the metal is very brittle (a problem from time to time with Chinese production, though it seems less of a problem in recent years, I think). I had to replace both of the pilots on my NH EP5. Pretty common problem with these.

Are the replacements any better than the original?

I have one of K-Lines EP5 but the pilots haven't crumbled yet.