I just got my Greater Yamaha girdled head last night and it has holes for the 2 lord mounts on top, should they fit my Riva Freeride pattern? The holes are coarse thread, and one lord mount I just got from Gorilla has fine threads, and I believe the existing one I have is fine also but need to ck. Should this all work or do I need to order an ADA bracket, and what type threads does it have? Nothing is ever simple.:thumbsdown: