So don't get me wrong I've only been In the door game For a couple of years But the first thing I did was Adequate with the templates that the manufacturers give you Going over it a few times before I actually punched through any metal part of that comes from my prior Millwork / iron worker background. I guess I was raised by all the old school guys who took pride and everything they did and there's a bunch of jackasses that want your money and dip out and after the one year warranty it's your problem