I have a leak in my Seastar helm but I have no idea which helm it is. The boat is '86 and I assume it is original. I cannot find any markings on it. The cylinder is a HC 5340-42. What replacement helm will work with my cylider? Can I use any helm? The motor is a single Evinrude 225. Should I try a new seal kit? If so which seal kit? Thank you for any help.