Chunk size

I apologize if this has been asked & answered already. I browsed the =
development archives & didn't see anything relevant.
We have run into some interoperability issues & I would like to know how =
to:
1) shut off GIOP fragmentation dynamically through a configuration =
option, or,
2) increase the "chunk" size dynamically through a configuration option

I would also like to ask for an enhancement to do either #1 or #2 above.
-- thank you