Hi folks, I'd appreciate some advice/comments from "die kenners' out there. I have a Trek 1500 with Ultegra Group set. I have changed the Bontrager Lite wheels for some Eastons, as a first 'upgrade'. My view is that the thing to do next is to replace the frame with a lighter carbon frame, just transferring the group set over. Would you agree, or is the improvement likely to be too small to bother? Any (constructive ) advice/comment will be appreciated.. cheers Sun