Ryan, one of the most common problems with these cars that can happen at any time and leave you stranded (or limping along) is dirt in the idle jets.
It's best to prepare ahead of time how you're going to deal with this. The fix is to pull the jets, one at a time, blow them out with spray carb cleaner, and then blow out the cavities in the sides of the carbs that you pulled them out of.
Besides the spray can of cleaner, you need to know where the jets are and how to get them out. The jet holders on Weber (and EMPI) carbs have hex heads, with slots for a flat-bladed screw driver. They're nasty to get at this way in our cars because of the limited clearance available. (Even the stubbiest screw driver can be too long.)
You can fit a set of jet holders from JayCee, that have allen-key recesses. These are much easier to remove and replace, since you'll be mostly working by feel when you do this.
So, learn where the jets are now (in the comfort of a warm, well-lit garage), put on the allen-key jet holders before you get stuck out somewhere, carry the right allen key with you, and also have a can of carb cleaner in your kit. You'll have to get the whole can down in the space between the carb and the engine side wall in order to blow out the carb bodies, so the smaller the can, the better.
If you're confused by any of this, Tony can run you through the drill.