I thought about drawing up the sheet metal parts and sending them out to a local shop, but the final cost (bar napkin math) was pushing $250 a bank. I'm sure the price would drop if you increased quantities, but that's a pretty big commitment.

I'm guessing we want to target (pun intended) the 3 and 4 banks? It seems like most people are building Stargazer, Quicksilver, and Seawitch. I'd gladly start putting them into CAD, but I don't have any on hand at the moment.

I've got 95% of a conversion kit modeled up that will "expand" 3 banks to 4 banks. I mostly did this because I do not have any 4 banks available to me, and could only measure a what I had on hand. I'm hoping to hear back from some sheet metal shops in the next week or two about pricing. If I manage to get all that in place, then it would be an easy step to make complete 4 banks.