Regarding carbon paste to reduce slippage, be wary of Park SAC-1. It's much more aggressive than I'd expected. It basically seems to be broken glass in grease. It scarred the hell out of my carbon frame seat tube and metal (aluminum or titanium, not sure) seat post, and the aluminum-to-aluminum contact of my stem and handlebar.
I have a full tube of that SAC-1 stuff and doubt I'll use it again unless I find something I want to destroy. Or maybe I'll use it as a grinding paste.