Jim I have to agree if I was doing it all over again I would have made the splitter myself out of ABS
But I was an excited newbie!
I have to tell you that Carbon Fiber stuff is tuff I have wacked it several times no real damage.
If you can locate the ABS in 8' sheets I think we could get 2 or 3 out of one sheet and make a template from mine.
If we make a wood form we could use a router to cut them nice and clean then cap the edge with door molding