Our scoop is much larger than the spoon that comes with most drip makers. The seep-through rate is determined by the fineness of grind and the amount of grind, not the perforated cap.
Try two of our scoop and a fine grind to get a rich brew.
Extending the time to 3-4 minutes as you describe will result in a more bitter brew. The object of the air pressure is to shorten the wet time to reduce bitterness. You should notice the sweeter result from pressing according to our instructions.