Joe,
Sounds like your 3 year old had the most fun <img src="http://www.catsailor.com/forums/images/graemlins/laugh.gif" alt="" />.
Also sounds like the gooseneck travels on a sliding track. Is that correct ? <img src="http://www.catsailor.com/forums/images/graemlins/ooo.gif" alt="" /> Haven't seen that setup since my days of sailing scow Moths. Most of the Mozzies have a fixed gooseneck position and adjust the downhaul constantly with a pulley system for sail flatness/fullness. See link to image below.
http://s51.photobucket.com/albums/f392/v...gAnch=imgAnch17The gooseneck fitting is rivetted to the mast and your 3 year old will never be able to remove it <img src="http://www.catsailor.com/forums/images/graemlins/cool.gif" alt="" />
If you really want to just replace the missing part and don't think that it's a Rostan Fitting then try making an enquiry with Riley via the link below:
http://www.rileyfittings.com/index.htmlIf you think that the gooseneck system replacement is justified then Australian High Performance Catamarans (AHPC) can mail orders anywhere. The gooseneck system in the image is from AHPC.
http://www.ahpc.com.au/home.htm Just mention that it is for a Mozzie and it should be easy to fit assuming that you have a rivetting gun. I phoned AHPC for a hound fitting on Wednesday and had the part delivered on Friday.
Regards,
Peter <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />