Not sure what the jetting is right now. Bought the quad this winter and it was running a foam filter with airbox and jetting was great for 40 degree riding (did a plug chop and it was good). I removed the airbox, put on k&n dual pod filters, but the weather was 80 degrees today. I figured the more air would be offset by the hotter air temps as far as jetting goes. The plugs were nice and tan when I pulled them today. Topend has supposedly been redone about 20 hours ago with a port and polish, not sure how much oversize. Still has stock carbs, boyseen reeds, cages. Gas is only about a month old. Clutch is disengaging fine. I rode around for a while, including a few stops, before this started happening and everything was kosher. I'll start with some new plugs and do a read tomorrow.
EDIT: somebody asked about pipes. It has FMF fatty pipes and FMF silencers.