Pickles

So, I have a 1982 280zx N/A that is completely stock. I bought the car with a half way done clutch job, so unfortuantely, I've never heard how it is supposed to drive. Ever since I've had it, it has had a really bad miss, but it seems to be at low rpms only. The car doesn't have to be on the road, I can simply hit the gas in neutral and make it miss. I have a video of it here I hope it comes through well. The problem goes away if I hit the gas hard enough. (I didn't make a video of this, but I can do that tomorrow if its needed) It has new plugs, wires, and distributor cap. I have also calibrated the AFM with the water test. I also replaced the gaskets for the fuel injectors (completely separate problem that has been solved) I've spent hours, and I mean hours looking for a vacuum leak. I found a couple very small ones, but nothing major. Unless I'm completely missing an area of the engine (which is possible I suppose) then I don't think I have a vacuum leak. I just need some direction. I was thinking maybe the vacuum advance or something? I'm really not sure. I also plan on checking fuel pressure tomorrow. Some direction would be great. If there is anything that I forgot, feel free to ask. Thank you.