>The remaining grids are a different value, and we may have to get them cast, which means designing a pattern and getting a foundry which is willing to try to make them. Resistor grids are very fragile and difficult to separate from the mold without breaking them, which makes many foundries reluctant to try. Our foundry contractor may have figured a way to cast them but we haven't tried yet.

WH 3 pt 8" grids. How the Jct has devolved, the poor dears. There's some 18 different values of these grid elements. The 1005 probably used more than just two types. Has your foundry guy ever heard of using core boxes to cast these? You have to get the cross section (and alloy) just right. Somewhere up there, there are new samples. On the other hand, you could use some of the numerous WH Type M grids which are lying around and camouflage them, but that wouldn't be what God Intended!!!