i bought an 84 k5 with a 305 and rochester carb, the choke wasnt working when i got the truck and in the process of fixing the choke, i think i did something to the fast (cold)idle. the story: i took off the electric choke and put on a universal hand choke, which freed the choke. at some point the fast idle got stuck and was on all the time, then it just stopped engaging when i started. the new choke cable then stuck, so i'm back with the electric (happy now with its working condition) but the cold idle does not engage unless i manually engage the linkage while the truck is running. i dont like having to sit in the truck with my foot on the gas for 5 minutes till its warm enough to hold it own, anybody have suggestions on something i may have overlooked?