I have a Golden Jubilee and when I increase the throttle nothing happens until about half way and then it revs up unlimited until I throttle down all the way. It takes it about 10 seconds for it to bring its idle down... So if this happens while I am driving I shut it down to prevent damage. I'm thinking my carb is the problem, so I took it off today and found out its a tsx-241b and I thought these Jubilees are supposed to have the tsx-428... Is this my problem? I may add I just got the tractor running and I am currently working on getting it to work properly.