Who is responsible for the USA "Club Class" list that BB linked?

The max weight they show for the LS1-B/C/F is incorrect.

The weight of 772 lbs is most likely for the "F" model.

My glider was built as a "C" then granted to become a "D" via a letter
from LS back in the good ol' days. The max weight was increased,
again only by letter and not by any physical change in the glider, to
752 lbs to allow for water ballast. The B and C probably have lower
max weights.

And why is the "D" model not listed?

Thanks,
Ray Lovinggood