I'm having some engine trouble and have a few leads but was hoping others might have some ideas to help narrow it down. Symptoms: Runs rich (when running) - tried to tune it the other day using a vacuum gage and adjusting air idle. Got it a bit better. Still ran a little rich and my buddy (who happens to be a mechanic for what that's worth) thinks I need a carb rebuild as one if the air idle screws seemed to bottom out. Then yesterday, I went to take it for a spin, and it would stall out as soon as I gave it any gas. bump started it into the garage and parked it. Got it fired up tonight and adjusted the idle mix and now it seems better (runs at least) Timing is set at about 7-8º BTDC, closer to 0º and it runs real rich. Not sure if it is related, but I have also been having battery charging problems, so I pulled the alt. tonight and will be getting it tested tomorrow. Any ideas on other things to consider? I'll be ordering a carb rebuild kit when I get the alt checked. Thanks in advance.