Ok I installed my cone air filter tecnigas q-tre exaust and the largest jet 102. After the gas flowed started right up I adjusted air screw (it is about 3/4 to 1 turn counter clockwise) test rode felt great. Installed new plug rode scoot around block removed plug I think there was a brown ring. Rode scoot to gas station about 2 miles each way. On the way back stopped installed another plug. Rode full throttle about 1 mile removed plug for later inspection. When I got home about an hour later looked at plug no ring. I feel that the scooter is running great so far 45 gps verified great low end. So now for the advice for one I feed it may be lean because it running so good. Two I guess I am nervous because it went so good after reading the tuning difficulties with stock carb on the forum. Do you all feel it is fine and safe to ride or should I get a few more larger jets. I thaught that 102 would have been to large. Also I would like to thank everyone who helped me up to this point.