I’m now beginning to wonder about your ‘rebuilt’ magneto, and wonder if it is sparking at low rpm. Try reducing the spark plug gaps down to 10 thou, just as an experiment, and see if it improves things. Further to my previous comments, I am one who does not use the throttle stop, in order to get a jerk free over-run, but until you get used to starting and riding a Scott it will probably help you to use it to obtain a tickover. IF a squirt of ‘Easystart’ does help starting, I would still suspect your carb, and perhaps you could borrow a known good one and substitute it for yours.
I’ve only ever had one Scott that was a bad starter, and that was a pseudo Sprint Special that had been ‘tuned’ by having the ports modified to the point where it had got very poor suction at kickstart rpm.
Brian
