I'm amazed no one has posted the trick of all tricks .... and it works ...
The first batch of these I made everyone that ate them was tearing up and saying oh their too hot, too spicy, BLAH BLAH BLAH. I like em a little spicy so I didn't really mind but since it's usually not only me I'm cooking for I had to find a solution.
SO I was reading somewhere online (another site maybe) that after you "canoe" them and de-vein and de-seed them, Rinse them in water and then toss them in a bowl and cover them with Milk. Let them soak in the milk for a few hours and then rinse them under cold water again before stuffing them.
So the second (and 3rd, 4th, 5th, 6th) batch I've made were all done using the Milk Soak and everyone was pleasantly surprised at how much more mild they were. (I kept a few outta the milk for me)
Try it and report back!