Ed, Bill,
Might you have a couple of references to the offset twin hoppers talked about in this thread?
I'm going to look in my hoppers file right now, maybe I've got something in there. I'll check my RP CYCs, too (I've got most of 'em but not all of them) and peruse the older CBCs I have at hand.
Thanks much,
Brian
Brian Chapman
Evansdale, Iowa