My truck has been running fine for the longest time, until last night. Rough idle, give it gas and the idle/rpm are all over the place, and stalls if no gas applied. Haven't done any work to the truck other than tune-up stuff and that was weeks ago.
As of today, the fuel filter has been changed - no luck. Plugs, cap and rotor look good. Vacuum lines all look fine. PCV valve is in working order.
I don't feel comfident in my abilities to work on the carb, but am open to any suggestions.

85 Toy pick-up, 22r carb, 192k miles, downey header, and torquer cam

Check MAP sensor.

says its carb'd, pull the plugs out and see what they look like.

clean the carb with some carb cleaner.