Proxy settings seem correct as I get a 404 when I change them and a 500 when they are reverted. However, the LWP::Debug was a goldmine. When run I get,

LWP::UserAgent::new()
LWP::UserAgent::request: ()
LWP::UserAgent::simple_request: POST url
LWP::UserAgent::_need_proxy: Not proxied
LWP::Protocol::http::request: ()
[download]

When I try and change the last line to something like

LWP::Protocol::https::request 'POST', 'url';
[download]

in my script it tells me that it can't locate object method "new" via package "LWP::Protocol::https::Request". Does this mean that the https request method is not implemented? Thanks so much for your continued help and guidance.