A reply to myself:
The general information about pressure and temp would be very useful.
However I went to our local coffee shop who have a similar grinder to the one we are hoping for and had them grind some 5 Senses beans.
Rushed home with my treasures and made my espresso -----
It was good. *So I am thinking as every coffee snob of any experience keeps saying *to us novices --- the key to good coffee is the grinder.
So I will leave Giotto boiler alone, enjoy my coffee which is okay and work towards the grinder of our choice.