I got my 2003 1200C in Oct 09 with 485 miles on it. The guy rode it a couple of time then parked it for six years in his driveway half covered. I took two weeks to change all fluids and clean up the bike. When I did the carb I put in new stock jets, 42 slow and 170 main. The bike seemed fine all winter, but when the warmer weather came it seemed to run hot and lose power. I have put 5000 miles on it since I got it. This past weekend I changed to a 45 slow jet and raised the needle with one washer. It's like a different bike now. It runs smoother and about 20 degrees cooler based on my dip stick thermometer.