HELP PLEASE. Restoring 1975 Hobie 12"(3.5m) cataraman for grandchildren. This Hobie is very similar to the Hobie 14' cat only smaller. Received boat as a gift with parts missing. The parts I still need are the lower rudder castings, the upper rudders castings with tiller bars and the tiller crossover bar. Also would like to get an original owners manual or a copy of same if possible.