Spirit3,

The K&B NVAs didn't change much over the years. It is possible that MECOA still has some of them as spare parts.

If they do, and you happen to come up with one that doesn't put the jet hole about in the middle of the venturii, you can pack with washers on one side or the other until it is right. The K&B NVA is a bit larger diameter than the Fox 35's, but is a good, progressive piece as far as needle settings go.

LUCK, and keeo us posted?