[ImaginativeFig]

I had the opposite problem of you, my choke control got gummed up. I would agree with them, I'd start by looking at where the choke plunger goes into the carb on the left side of the bike. My problem was partially a kinked, rusty spring maybe yours is broken or something? Here's a video of me messing with mine. I always like to see things in motion to help me understand