Just an FYI another fix to the savage lean problem. Run the 25 primerless tank and get a airplane header tank (2 ounce). The header tank has a clunk in it, so even when you flip over the engine is still getting fuel. I have mine mounted on my roll bar. So the pressure line from exhaust goes into main tank. Then main tank line goes into header, then output of header goes to carb. It works great plus you get extra run time.