When you hear those double pedal or double beater going really really fast, they are moving their feet 1/2" to an inch at the most. That`s how I learned it. A SK has a wide range for adjusting. Sit on the throne and tap both feet really fast raising them up all the way, then do it only raising your feet 1/2" or an inch. You go faster with less movement. That`s the range of a footboard adjustment. Also if the knuckle in the front that holds the beater is too high, it has a chance to scrape the head. That means it returns too far back.
Hey I think I understand this. I will try it tomorrow when my wife is not sleeping, thank you!
