Just got a '02 m750sie (2900miles) and love the styling, brakes,handling, and easy access for maintenance. Starts easy, plugs are fine. Sounds and runs great off the line, especially when shifting at 4k and above. However it does NOT like a steady 50 - 55mph. Instrument pod shudders like crazy, and bike is real "thumpy" when tying to increase speed out of this range w/out shifting. Is this normal? Riding since '70, but my first dooocati. Thanks for your help.