I will fully admit I might do the same thing, but the issue with doing it this way is that Summit never finds out their part is wrong.
While a pain in the ***, the better bet would be to return it. That way, the problem gets noted. Maybe one return doesn’t change stuff, but a bunch of returns might. Summit did after all stop selling Speedmaster parts after their recent snafu with copying other companies parts without permission.
Like I said, I’m guilty too, I’ve totally modified parts rather than return them because it was faster and got me back on the road.
Better to send it back and make the manufacturer eat the cost.