Kimber 9mm: .40 Breechface on STS Target II only?

[marklbucla]

I just read that the Kimber Stainless Target II in 9mm will have more frequent extraction issues because of the mis-sized breech face to .40. Is this an issue with only the Stainless Target II or does this apply to their whole 9mm line- Tactial Pro II, Pro Carry II?

And when it comes to having to tweak the extractor, how much more frequently is it required for the Kimber than other 1911s?

This was posted over at 1911 forum, but I haven't gotten any responses.