I just got a used La Cimbali Super Automatic Espresso machine. I have no experience with this type of machine. I have always used traditional automatic machines. Normally a espresso shot takes approx. 20 seconds to pull. This machine is set up for approx. 10 second shots. I had always been told that too short the espresso is way underdeveloped and too long way overextracted. Do these rules apply to this or any Super Auto machine? Or is 10 second extractions the norm for this type of machine? I would aprreciate any help on this topic.