2005 Honda shadow spirit. So I was adjusting my a/f screws because my bike was running too lean, so I turned it out 3 turns out from being fully closed. I then start up my bike, with the choke fully open, but as I turn off the choke the rpms start to drop until it completely dies. I then put the a/f screws back to factory settings which was 2 1/4 turns out from close and it still dies when I close the choke. Before I started adjusting the screws, I would start the bike with choke fully out on cold starts and then immediately close the choke right after and it was fine. Please help! Thanks!