Can't seem to get the bike running properly. Can't use choke at all or it will not start. Idling is very unstable with lot's of coughing and if you touch the choke lever it will immediately kill the engine. Running way too rich I think? Pilot adjuster screw seems to be correct by Haynes, 1 1/4 open. Idling seems a little low, just about 1000rpm...New header gasket, so no leaks there. I think I got the timing right. Compression stroke, points open when F lines up. Still need to double check that it isn't 180 degrees out... Any adviced? Carb rebuild?