Just email us links to those pages with explicit details (some pages are quite large) of where the text in question is. Adding comments to pages (even if possible) is not likely to help because it's yet another place we'd need to monitor (we already have a bunch of those).
We're getting a feel for how a user contribution area will work, how many user/editors are working on them and the quality of the content. We'll then use that experience to decide if we want to open up further areas of the wiki. So far there's not been a lot of work on that area but perhaps that's because of the Holidays. We'll see after the first of the year if we get more people contributing to that wiki.