I seemed to have developped an issue with my original carb. Firstly, im having issues with my choke. It doesn't seem to work properly as I have to give it gas, otherwise it dies when its cold. When its warmed up I have another issue. Normally it idles arount 900-1000RPM but sometimes, it idles around 2000RPM and I have to jerk the throttle in order to get it back down to normal. Plus the revs go down much slower than normal. That it especially visible when im changing gears, since the timing is now off. It doesn't always do it. Sometimes it idles at normal and revs go down at normal speed so im not really sure what it is. Maybe a solenoid on the carb? Air leak?