I put in the 48 pilot and a Zip ty screw. All else is stock on the settings. I still get some popping on decel, not backfiring. It is just not as smooth as my 05. I have tried the screw frokm between 1 to 2.5 with no apparent change. I was thinking of checking: Float level Air leak Possibly the adjustable screw lost the oring? Thoughts? Has anyone been able to remove the popping completely?