'Beast' is an 07 Nomad bought new that now has 51K miles on it. When nearing the point at which you would normally upshift, the engine seems as though it is skipping/hesitating/running rough and will not turn faster until you upshift. 75 mph in 5th is the top end before this problem starts. Seems like it is not getting enough air or gas. I have replaced airfilter, spark plugs, always use premium gas, and have never abused the bike, although I am an aggressive rider. The bike runs smoothly until you roll the throttle on and it nears the shifting point. I live in B'ham, Alabama and the problem appeared recently with the cooler temps of 30-50 degrees. I ride every day, and the problem seems to be worse the colder it gets. I am by no means an expert mechanic, but I do some of the maintenance myself. I really do not want to give to the dealer if this is an easy fix because if it is not raining hard, I'm riding! Bike is still under factory warranty. Could this be an fuel injector/pump problem? Any ideas or suggestions?