It is truly possible to swap out the main and/or pilot jet with the carb still on the bike?
I needed to change the main jet trailside on my 2011 due to a lean condition. I've heard stories where guys were able to swap jets through the 17mm opening in the bottom of the carb, but keep in mind that I've never met any of these guys in person. But I was ready for the challenge.
I have a plastic jet tool, but it still took several minutes to remove the jet working through that tiny hole. I spent 10+ minutes trying to start the threads on the new jet, but couldn't get it started cleanly. I decided to rotate the carb to get a better view, but loosening the screw on the boots and removing some hoses still didn't let the carb rotate enough to get a clean view. After nearly mis-threading the new jet for the umpteenth time, I gave up and removed the subframe, shock, exhaust... you know the drill.
Perhaps my fingers are simply too large, and I chose the wrong profession, um, err, bike for such trailside maintenance. Can anyone actually confirm whether this is possible? If so, what are your methods and tricks to making this a painless process?