JD supplies/recommends a 30 pilot regardless of elevation (I have their needle kit). But you're right, according to them the main and clip I was running should have been rich, so as I was doing the new block gasket I went ahead and changed back to the recommended settings. The JD chart has a single setting for 5000-10000 feet (400 main jet). If that is real I would be delighted. I'd be 80% satisfied if I can just find one setting that is good for both the desert and alpine riding areas near Albuquerque, but even that is 5k to near 8k feet.