Double check all your fuel lines for pinholes(even the line inside the tank). To get your needles back to a starting position, Turn the high end out( not necessary if it's a remote needle). Turn the idle needle all the way in, then turn it back out 2 turns. Now turn the high needle all the way in, then back it out 3 turns. After getting the engine running, adjust the high end needle to a slightly rich mixture at full throttle, then bring it down to an idle and keep it there for thirty seconds, then quickly back to full throttle. If it sputters or sags before coming to full throttle(or dies), adjust the low needle by 1/8 turn, leaner if it sputters, richer if it sags. Then repeat the above until it immediately picks up when throttled. Always run full throttle for 10-15 seconds to burn excess fuel off, then let it idle for 15 seconds or longer before throttling up. You will have to readjust the high end needle after getting the low end right. After getting it adjusted right, you should never have to adjust the needle more than a click or two for the varying conditions in your area. I've had good luck with OS and Fox Miracle plugs in my OS .46's, the centerline of the fuel tank should be even with the centerline of the carb. Hope this helps.