The 10000 will probably need to be a customizable variable.  I'm
going to do it next week.

BTW, I needed to set the server variable `nntp-authinfo-force'
to t in order to let No Gnus v0.7 send the AUTHINFO data to the
Motzarella server as follows:

(nntp "motzarella"
      (nntp-address "news.motzarella.org")
      (nntp-authinfo-user "yamaoka")
      (nntp-authinfo-password "********")
      (nntp-authinfo-force t)
      ...)

I guess you have the FORCE element in the ~/.authinfo file since
such a server variable has not been implemented yet in Gnus v5.11.

Regards,