[Twisted-Python] Public Key Authentication with Conch

Hello, I'm trying out Twisted/Conch as a replacement for a script based upon Paramiko for transferring some files around. However, I'm not able to get my Twisted/Conch script to authenticate to the remote server using public keys. Password authentication works in my Twisted/Conch script and public key authentication works when I connect to a local server that uses OpenSSH. The remote server identifies itself as "SSH-2.0-http://3sp.com_Maverick_SSHD". Can anyone give me any tips on what might be going wrong? Is there a way to increase the verbosity to see what might be going on? -- Jeff Ollie