At the end of the day... Many fool them selves and or others; as they perceive they have solved the problem first.. *That was until google came along.. Yet some still can not find it.
However; you still have to know how to use it *;)
For me, I have a Mechanical and Electrical / Electronics / Computer background and a nasty disposition *;D
Thus as another CSér implied... Intelligence is gathered assessed and only once all the evidence is in; acted upon.
1: *FAQ and How tos http://www.home-barista.com/faqs-and-favorites-digest.html ( Lots of info... But only one of any number of sites around the world)
It is only after reading MULTIPLE posts and often asking WHY more than once.. Do some of the steps make perfect sense and is logical.. *However if you jump in to quick or take a short cut.. You will get caught out.
In essence... Follow point 3 above..
The chirping and different pressure points and turning the top burr; is about feeling and understanding the condition of the burr carriers, the top burr thread and last but not least where Zero might be. If you understand what and why your doing the steps in point 3 above, then the video is nothing more than a visual reference; as a chirp to me may be very different to your ears.
It is then with a sound mechanical understanding that you can make a call as to miss aligned burrs / bent spindle/ slop in the thread etc etc etc.
Knowledge is only part of the 2 + 2 = 5
Understanding the concepts and first principles; play a big part
Ability to apply the theory; is often not even considered.
Opps... That dammed truck keeps trying to knock me off my zebra crossing. Does he not realise that at my age, the bright lights and line markings are all that keeps me going.. *
PS. Also the only place I can get a good free wireless signal.. If its not locked then it must be OK... *legal.NOT.com