Well, I created a mod that uses effects #96 Level change (set to 0) and #104 Experience points (set to -1), then added a point of XP with AddXPObject(). It works for single-classes, although I have to correct the HP, saves, kit bonuses, and and basically everything else. The problem is with multi-classes, because there's no effect for changing second or third class levels. I am off to try the Weidu patch method, but I'm pretty sure it won't work as things are now. Weidu strips the resource fork from the files (which can be good for smaller file sizes - no icons), but that resource fork is where the application is defined as an application. Once you copy something with Weidu, it becomes a regular document, which works for most mods, but in this case, it's editing the game itself. I'm off to test it now, so we'll see.