While changing the oil tonight I tried to clean the screen located in the downtube. I could not get a wrench to stay on without the hex stripping. I have a feeling that the P.O.'s must have messed that up somewhere along the line. Finally, I gave up and just changed the oil and filter. I know that I'm gonna have to get brutal with that thing the next time so I want to have a brand new shiny one ready to replace it when the next oil change comes up. Where can I get it (besides dealer) and does anyone have a PN? Also, any tricks to getting it out? It's such a thin hex even the vice grips wouldn't hold it.