My 2001 XR650R has been uncorked, but has a stock exhaust and an HRC tip. I usually ride above 2500 feet. After installing an Edelbrock carb, the bike is running over 220 degrees in 1st and 2nd gear (TrailTech Vapor installed). Carb Idle to Mid-Range adjustment: If I go two clicks toward rich, the temp drops back to 195 or so, but it starts hard and gets poor gas mileage. I've had the carb on for three rides, and there's not much else I can do with this adjustment. Should I change the Mid-Range to Full throttle adjustment with a smaller needle (#17) and then richen the low end? Would that help with the overheating, or do I need an aftermarket exhaust?