966S
Low speed jet assembly part # should be 11-232S.
Low speed jet tube: Jet size No. 67 (.032 inch) drill.
The metering rod jet is .1015 inch diameter.
Standard metering rod - part # 75-838.
Metering rods also came in 1 & 2 sizes lean.
If you're lucky enough to find an old repair package, #1742,
jets and metering rod were included in the kit.