67 is opposite, I don't remember when they switched. What I was thinking, was, on the newer stuff, you could slice one of the bolt holes "slotted" (U) on the flange on the fender. You could braze/ solder a piece of 1/4" tube into the neck and keep it "flat" IE angled into the neck. That way you could slide the tube through the "U" bolt hole on the way in. Just an idea.