Your needle is an n1ef not nef...
If it were me - I would go with one of the following : GMPs recommendations (JD jetting) as a baseline, the n3 series needles or a cck, etc. and then de-rate for your altitude. Consider sea level main and pilot to be 178 main and 45/48 pilot for sea level when using a leaner needle. If the jetting is good at sea level or close to it, then the jetting compensation tables in the manual are accurate.
If you want to have a great working carb and don't want to do a bunch of tinkering - send it to Ron at RB-Designs for his carb mods. The nice thing about his modifications is that he internally mods the carb to add pilot circuit sensitivity - so you can quickly dial in changes for changing altitude & temps. He adds a knurled air screw adjuster that you can turn the air screw with a gloved hand, etc.
And, for those in the u.s. I would spend the money to have Ron massage the carb for you versus spending $70 on a JD jetting kit
jeff
P.S. send your suspension to Les at LT-Racing!
