I have a 2002 Wing with 55000 miles on it. Up until about a year ago I usually got about 40mpg. (I'm a daily commuter, ~ 75 miles / day mixed highway and about 20% city driving). Since then the mileage has been decreasing, running about 32 mpg now. The bike has had regular oil/filter changes, and I replaced the plugs and air filter last month - no effect on the gas mileage. Other than the mileage the bike runs okay - anybody have any advice on what might be going on / needed additional maintainence? Thanks