Din't skimp on wire nuts,, they are not all the same.
I had bought some off brand wire nut thinking it would not matter too much. Well I then bought these which I have used in the past and hold 5 times better.
The off brand nuts seemed to loosen with the slightest back turning. Alost like they could easily come loose.When I recieved these I tested them also and they hold well and take a bit to tturn them off,,, like you would want.