Thermo-Quad metering rod measures

Remember the relationship of rod to jet will dictate AFR. If you use a bigger jet then you need a bigger rod to maintain the same AFR as the restriction has to be the same to meter the same amount of fuel.

Try this guy:

THE CARBURETOR SHOP

At one time he would make rods and kits for sale, not sure if he still does.
Thanks for the info. As the rods are nearly impossible to find I just have to go with what I can find and then match the jets to the rods.

I have visited that site. Interesting place and could be that they have what I need. They don't have anything listed online and the communication appears to be complicated. It took some time to find out that they even have email and an address where to send. It would probably be an interesting experience to visit the shop.