ssuperbike, are you familiar with the fork on the 86 XR250? what do you consider a real revalve? do you mean a damper rod modification, as in welding and resizing the orfices? The product I'm talking about are "cartridge emulators", by Race Tech. I'm not a fan of much they do, but this product on this application, is a good mod. It actually gives you some "valving", although crude.