Rebuilding Heater A/C control?

Got my NOS replacement from OCPNW (Old Car Parts N W . com.) Gent`s name is Ray Orme, Tel (206) 300-1083 or [email protected]. The part you need is the vaccum unit and comes already to install. The 4 pieces you are wondering about are part of the internals in this vaccum control. Hopes this helps you. I forget exactly what I paid but remember it was reasonable and even came in the original packaging. Good luck!