Still working through my 1983 R80 G/S and I'm having a hard time with the choke. When I try to start the bike with the choke on, it won't start at all. Only starts with the choke off. Then, when I put the choke on after the bike is started, it doesn't increase the RPM's, but rather starts to caugh and die. I'm also having a hard time starting the bike during the cold and it would be helpful to have a useful choke during the colder weather. Seems like the cables are working properly. Any suggestions about where I should go from here?