problem with converting it over to Net::SSH::Expect is that the script is completely done and is around 4k lines of code. It just recently became a problem because of some changes on the devices that have longer outputs so I'd have to competely re-write the script.
IO::Stty::stty passed invalid parameter '"cols'
IO::Stty::stty passed invalid parameter '200"'
I also tried columns, no quotes, etc.
What you have is passing "cols and 200" to stty, which it does not recognize (as indicated in the error messages). Also note that according to the docs, you probably want to be using the slave side of the pty: