Oh thats a bad thing when thread comes out with it. The jet valve is a metered vacuum leek with no fuel. They have been known to destroy heads and valve train. On the side of the carb is a large hose that feeds the system. Direct air, no fuel.
I think you need to look around craiglist and get yourself a parts truck for further repairs and long life of the truck you love. Under 500 is a good price, running.