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Gas Cap for 2013 Fun Deck 2"

This is a 2" plastic job that breaks off easily. Sun Dog caps have slightly different thread. I cannot find out who makes the deck filler from searching on the web.
Any ideas out there on the maker or replacement?
Comments
http://www.perko.com/catalog/fuel_system_components/1027/vented_fill_for_1-1_2_hose_-_angled_neck/
Thanks for commenting back.
Maybe you can post a picture of it?
or
https://www.google.com/webhp?sourceid=chrome-instant&rlz=1C1CHFX_enUS592US592&ion=1&espv=2&ie=UTF-8#q=attwood gas cap
Caps come in plastic or chrome finish tops. $80 with discount and shipping from my dealer. Be careful with those caps!