So the other day I was parking out 1964 JD3020 and when I pulled the shut-off knob/rod out to shut er down, the knob and rod pulled right out of the hand throttle! It took 6 days of soaking the steering wheel center hub and a lot of struggling with a gear pulled to get the wheel off the shaft. Now I cant get the handle throttle collar off of the steering column. Yes, I removed the 9/16 bolt on the throttle side of the collar and the little plug on the opposite side and still cant get the two parts to slide apart. At this point I just want to hook up a fuel shut-off knob down closer to the fuel injection pump like on the 3010 diesels. I spent $94 on a 3 thick shop manual from John Deere specifically for the 3000 series tractors and there isnt any information anywhere in the manual that shows how the fuel shut-off knob on the steering column shuts off the fuel/tractor. Any help would be GREATLY appreciated. Thank you in advance.