Carburetor

could just be stuck floats, I had a 650 that I took off and swapped with a 750 for three weeks and when I put the 650 back on I had fuel everywhere, same thing as you describe. Took the carb back off and gave it a few good shakes until I heard the floats moving and reinstalled it with no issues. I know it's been alot longer than 3wks for you but, give it a shot and see what happens before you tear into it.