Probably idle jet- but want to make sure?

Hey guys, having a problem with my 76 bug!

It's stalling in traffic if I let it idle, but fine to drive when I've got my foot on the go-pedal.
Only thing is it won't work for a week- then spend a day idling fine, then go right on back to stalling? I figured it was the idle jet, but any other things I should look for? It needs a service soon so I figured If I could track the problem it would
Make life easier!

Cheers,
Ollie

Check the solenoid near the accelerator cable as it sometimes works loose.

air leak somewhere