I posted a similar thread before but its doing it again now with a different carb. The idle gets stuck at about 1500 RPM's sometimes higher and I can't blip it down even after the whole truck has warmed up. Its real aggravating as I don't want to put in gear at that high of an idle. The only piece that swapped over from the carbs was the idle stop solenoid so I thought maybe that was it, replaced with a new one and about a week later the problem happens again. Any ideas?