[Halcon]

Hi All, I am the proud new owner of a 2013 XC300, but am having trouble getting it to run properly. It didn't run too well on my short test ride before purchase, but bike seemed solid. I took it for a longer ride and it ran strong on the pipe at wider throttle positions, but burbled down low, I also heard some detonation on a light throttle. I pulled the jets to check everything, original 42 pilot was partially blocked, I swapped in a new 40, main was ok. I put in a new BR8EG, new air filter, new 94 octane 50:1. I am at 3000', temp was 15c (60f) it now runs worse. I have a N1EF on 4, 40 pilot and a 168 main. Any suggestions on which way I should go would be gratefully accepted, thanks.