Do you guys notice with more advance that there is a "courseness" to the motor? I've ran 3 to 6 degrees and settled on 5 for advance on the degree wheel. I've noticed that rolling on the throttle at 2300 rpms or cruising at 3K the engine doesn't seem as smooth. I had been running 6 until my big trip to Yellowstone and Montana and backed the wheel down to 3 degrees because I was concerned about gas quality and I had travel across 400 miles of desert heat over 110 degrees. Bike did fine on 89 and never pinged set at 3 degrees. When my trip was done I changed the wheel back to 5 degrees and felt that courseness I did at 6 degrees. I also noticed that the exhaust is louder with more advance which I like. Any thoughts on this?