We bought a used 09 125LE for my 11 year old. It ran pretty good but when I got on it, it would really miss out when I was hard into the throttle. We purchased a 17.5 and 110 jet based on input from many forums. We pulled the existing pilot out and it was already a 17.5. I then figured the previous owner already did the larger jets and that I would find a 110 in the main. I pulled the main out and it was a 100??? I left the 17.5 in and replaced the 100 with the 110. The bike now misses out with my son to the point where he is insisting I put the old jet back in. What is the problem? I know little to nothing about motors but wonder if I should replace the 17.5 with the new 17.5 (maybe old one is a bit clogged) and whether the carb needs more gas flowing to it. Should I adjust something else after putting in the 110?