Last one I promise 
Sickrage used to connect with https:///RPC2 but that no longer works. I have tried it with scgi://localhost/ as well as other combinations. am I missing something?
Try settings like this:
Torrent host:port https://serverip/rutorrent/plugins/httprpc/action.php
Http Authentication Digest
Verify certificate (Leave unchecked)
Then enter your username and password.
Hit ‘Save’ and then ‘Test Connection’
You should be able to connect.
Got it! Thank yoiu!