My '84 308 QV accelerator has been getting more and more sticky these past couple of times I've gone out for a drive. Now, it's getting dangerous. From a dead stop, I can barely move the pedal with my foot. Once I get it free, it moves, but not well. I have to practically stand on it to get it to move, but occasionally, it moves quickly like a normal pedal and goes to the floor. Stop-and-go traffic is a holy nightmare, as I'm either stalling the car, or giving it too much acceleration and cooking the clutch. I'm starting to fear for people in front of me, as I could over-accelerate into the back of someone's car. It has to be something with the pedal mechanism/linkage, because once I'm underway the car will accelerate well. There's not much of carpeting, and I have no floor mats to get in the way, so it can't be interference that I can tell. Any thoughts as to what I can look at first?