Greetings! I've been sifting through the interwebs for Triumph Street Twin fuel cap parts, but don't see any parts listed. I'm looking specifically for the threaded plastic part and related components that live under the shiny cosmetic fuel cap cover. (Long story short: I lost my gas cap on the highway, and ordered a Rizoma Street Twin gas cap which is basically the cover for the actual functioning parts, so trying to put this together in reverse.) Any leads on part numbers would be much appreciated. Or if this is a futile effort, let me know!