Is there a trick to fluting? I had my first try at it on the HS ribs, and it didn't seem so great. A couple ribs were not flat and kinda twisted, and fluting is supposed to fix that, right? I fluted a little, and a little more and they didn't seem to change much. I bent and twisted and played around with the seamer to flatten them back out a little and bend the flange perpendicular to the web. I eventually got them pretty good, but it never really figured out how I got them there...