I purchased a recored unit from Gernold on exchange in 2011.
Typically, when you go to a "local" radiator shop in your area, where ever that may be, the shop will use/order standardized radiator cores they purchase and solder the unit back together. That's why sometimes when you see a recored radiator on an older or import car [in the US] it doesn't always look correct.
What Gernold told me is that he found a place, I think it was in Maine, where the firm had the equipment to actually manufacture the cores--you know, bend the fins, create the tubes, etc. So, Gernold came up with the sizing and capacity specs and has the cores made for him specifically for the Pagoda radiators.
My recored unit from Gernold worked perfectly from the moment it was installed. Surely this isn't the only workable solution but those who know Gernold know he has extremely high standards.