miss at slow acceleration and cruise

[drewdude92]

My truck has a little miss when accelerating normal and at cruise going thirty forty fifty and seventy just whatever. It runs perfect idling and laying it to the floor. Ive looked at my plug wires when it is dark outside and can see a tiny glow coming from plug wires 2, 3, 4, and 7. I replaced the plug wires with others just to see and its still i small glow. I dont know whats going on for sure. Also if your getting up to speeds very slowly sometimes it will backfire. it sounds like its coming through the carb.

any help would be awesome. thank you