Last ride of the year I had turn signal switch problems so I took off left hand cluster, corrected issue and put back together. This spring I went to start it and when I move choke beyond half choke or give it throttle it dies. I suspect it's an issue with choke lever on the handlebar, but i've had it apart about 4 times and cannot see any kinks or other issues. Also somehow I inadvertently failed to fill the tank and it wintered with only a quarter tank. Looking for ideas/suggestions. Thanks.