So this is a bike I bought used but in mostly stock condition. It is in good shape and I ride in NC VA moderate temperatures(except for now) and low elevations. I use the bike just for play riding, not to serious trails and tracks. The stock jetting was very good and I was very reluctant to change anything, but I like JD jetting on my Yamahas and I was getting a little bit of decel popping and my recent FI bikes (KTM and KAW) have spoiled me with super strong bottom and mid power. So with my JD kit, my new oversized GPR radiators, and my no toil screenless air filter kit, I quickly got all parts on. The radiators look great, no problem with new air filter, but as usual JD install is tough deciding which needle and main jet. Went with recommended 190 mj even though it would seem rich based on stock 178 mj, went with blue needle for standard temps/low altitude even though most seem to use the red needle from what I read on internet, went with middle 4 cp position even though 5 cp seemed to match stock needle lenght. Set fuel screw 2ts. Got it fired, right off bat knew I was lean at idle, popping, stalling, runs on choke better. Turned fuel screw out to 3ts, idling improved, popping lessened, rode it a little, top and mid seemed right and seemed stronger typical JD results. But stock pilot jet 42 is either lean with needle in clip 4 or I need to go to clip 5. As with my Yamahas a richer pj always seemed to work well with JD kit, so I now have a 48 and 45 ordered, will try 48 and report results if weather allows, Recommendations?