Still too much. Notice all the details that are being distorted or completely turned black. I'd recommend no filters.
---------- Post added September 27, 2011 at 09:18 AM ---------- Previous post was September 15, 2011 at 05:49 PM ----------
Oh, sorry your post was stuck in the moderated queue for some reason and so I didn't see it for a while. Also it messed up my post from before, well whatever.
Anyways I don't really see what needs improving there in the 3 in your most recent post. You may have leveled them slightly too darkly, but overall the line art is intact, and the grays look fine enough.
For the raws used in the first post, those have some odd scan lines. You can fix those up kinda quickly with the burn and dodge tools in photoshop (set to midtones and around 3-5%), but it might not be worth the time if you're cleaning a lot of pages at a time. As for fixing the sharpness in the patterns there, you can try using a 0.2 gaussian blur, or a very very small amount of filter that you used, before leveling.