I did the same thing - over and over, and then had my laptop next to me as I did the job. I got the bik together yesterday and it fired up on the 3rd kick. Still have the surging when I drop off the gas. It's in my mid rang so I'm going to drop the piolit jet from a 60 to a 58 - 55. I also found 2 small crack in my pipe, 1 at the 1st mount below the cylinder and the other just before the silicer. Both can cause surging/poping (not pining). So that will be next thing to get fixed asap.