I've just reread all the old post's talking about the crankcase hose spitting oil into the efi and aircleaner box, which not only gets burned with your gas, but also oils your airfilter and drains out onto the swingarm and rear wheel etc.
I didn't think other year fse's had this problem. Only the '05's.
I copied my XR440 and plugged the hose connection to airfilter box and ran a longer hose from the crankcase, straight up to the horizontal frame, and then all the way back to the end of left rear panel. Then I added a small breather filter, synthetic so I could clean it in gas or similar. Guess what? It still shoots out of there like nobody's buisness! A couple weeks ago I rode it thru some mountains doing single track and jeep trails. Whenever I got on it, it thru oil out. We stopped for lunch and I was lucky the little restaurant/store had some motoroil. It really spits it out.
I'm gonna contact Bergerhag and see if he is still having success with his remedy. I started my search on page six and kept reading all the way to this page. Good luck, Bob.