yes I was talking about the long needle that goes in the main. it will be loose once it lifts. mine was loose when seated. some but not all of the symptoms were similar. mine was popping and back firing but it was due to an extremely rich mixture and fuel collecting in the pipe. mine however was fouling plugs and not turning them white. you would have to do a side by side comparison with the old one to know for sure (assuming you changed it with your rebuild) you don't want to disable the tps in my opinion. one it will not cause the issues you are having and two when you disable it the cdi defaults to the wide open throttle timing curve. making the machine harder to start and reducing performance on the bottom end. checking it is fairly easy if you have a good ohm meter but you will need a manual for the specifications. don't get too hung up on the tors tps or the parking brake switch, they are just simple rule outs to help me rule out some of the electronic stuff. the fact that it ran before parked and now has issues normally says carb. electronics don't normally go bad sitting.there is a spring and diaphragm on the side of the carb, the name escapes me right now. did you check to make sure that is good when you did your rebuild. that can cause vacuum issues as well.