I appreciate the advice, but the shipping is the issue. At ~$50 each way it adds up fast, especially if it needs to go back for more work.
There's a company called Mean City Cycles in NC that is legend in the HD community, same deal... people have gotten caught in the shipping trap & ended up with more $$ in than buying a custom seat.
I'll keep looking. If I can't find one maybe I'll do as you suggest & sculpt it, but find a local company for the rest.
Another pricey option is Corbin.... they are local & will actually build one while you wait, test ride, sculpt, test ride, etc. $$ tho.