Seeing as I don't know all of the proper gunsmithing terminology, I'm going to arbitrarily invent some for the different areas of the mag clip lips that I'm talking about. I took some Latin in high school and also have some interest in human anatomy, so here goes. The longer area that covers most of the casing I'm going to call the labia minora (basically means "small lips"), and the smaller tang-like pieces that wrap around the front/ball of the rd the labia majora. The latter roughly translates as "large lips" - but even though this isn't the largest feature of the lip area of the mag, they do stick out in front and I like the vague physical resemblance to the similarly named parts of my wife. Whaddya think about that, ISC?
Laserspot, it's definitely the curiosity factor, independence, and stubborness factor that does it for me. I got started working on the trusty old 1958 Remy 22 that my dad gave me when I couldn't find a gunsmith that could work on it for several weeks. All of the shops I called were backed up due to incredible demand, something to do with scary changes in legislation looming and a guy whose name rhymes with Osama. I also didn't think that the bill was going to be very reasonable for what I figured wasn't that much real work. I bought a take-down manual for $15 on ebay, did the work myself, and enjoyed it. That's the sweetest/most accurate shooting little rifle you'll ever find, and my new Ruger can't even compare. Next thing after putting a PD barrel on my Mossy 500 was I decided that the overly stiff safety was an issue that I could also address. My solutions and pics are/were posted here somewhere, and that turned out great as well. Encouraged, I figured I could beat this feed thing on my little C9 too. Lastly (on this particular subject), God forbid that there may ever come a time when you can't just take your firearm to a gunsmith, or that you may have a critical situation where you just need to do something quick, yourself. There - I'm an old boy scout, and I still just like to be prepared.
Enough of prodding, history and ranting. I don't have my CLP yet, but I'll try the dowel rod and emory cloth wrapping. My gun cleaning kit is in storage somewhere (we're in temporary housing while building a new home), and my working light's not the best at the mom-in-laws. So I'm making do for now with really just a boresnake, my punch set, small hammer, and a piece of 2x8 board with some holes for tapping pins out. From what I can see inside the clip, it either appears a little dirty or dingy, mildly tacky with some sort of residue, or possibly rough. I don't need to make it shine, but I figure that smoothing/cleaning/lubricating this forward surface of the mag has to be an OK idea. I'll also soak/clean and then very lightly coat the spring as well, which seems to have a less-than-smooth patina of something on it now. I'll do this for all three mags, including the polishing for the nose of the follower.
I also agree with the idea of not changing too much at once - this is sound advice for just about anything that you troubleshoot. I'll take my baby channel locks to the range for making slight changes to the mag lips, and won't mess with the other two mags until I've got a working solution for the first one. The range I use is great - really very little more than a large dirt and gravel pit in a state wildlife preservation area. I'm usually the only one driving out there through the rocky creek bed at dawn, spooking a small herd of deer once I get to the empty parking lot. I can get lots of work done, use silhouette targets, and do just about anything I want without coordinating with other shooters or having the supervision of a range marshall. Thanks again for all of the great comments!