Hi Jason,
I have the same boat (mines a '75 hull #260) but I haven't had a chance to sail her since buying her last October. From what I've seen there's a pin that goes through the bow stem that you can run the eye of the head sail through. If it helps, I can shoot a picture of what I've got and post it.
Say, have you gotten around to the mainsail? I'm looking for a picture of the out haul, have all the original blocks but don't know how it was originally set up.
ps good to hear from other E25 CB owners!