You need this link:
You will probably find that your local parts store will have to order some of this anyway so my recommendation is to keep the list handy but use Moyer for the first time at least.
Definitely order the carb rebuild kit from Moyer. It isn't hard to do even if you've never taken a carb apart. The A4 carb is so simple that once you have it apart you'll probably be amazed it does anything at all.
PS -- you shouldn't plan to acquire most of these kinds of parts "in a pinch." You should have an extra set around anyway, you may need them for troubleshooting.