I have a 1996 Vulcan vn1500d classic and for some reason when I am going up long hills it seems to overheat and run like **** before I get to the top.. Why is this happening??? Could it be the carb not adjusted right? I think it is running way too rich because I noticed a power loss after having the carburetor rebuilt and you can smell the exhaust at an idol. Anyone have any ideas as to what it could be???