Apologies, I'd missed this beuaty at the timeWhy do you insist on denying indisputable facts?
The process is summarised here: https://www.randa.org/roh/interpretations/rule-5#5_6_1
So...
1. What is "the expected score"? Nobody knows because they won't tell us
2. "the expected..blah blah blah". What is this, they won't tell us?
3. See note 1
4. See note 1
5. How?
6. What calculations? None are shown. With CSS we could work it out manually
7. Well, that's OK then