For what it's worth... the way you are assigning "class" is problematic.

I am aware of this issue. Thanks for pointing this out though.
So far I relied on Wikipedia's assigning, but I understand (by reading the rules) that Club class is a "virtual" class.

Do you think I should *never* mention the Club class and stick to the original class assignment? Do you think it should be the case for every glider possibly assignable to Club class?

Thank you, learning a lot! :-)

--
Jacopo