Hello, HairAgain--

I'm in the same boat. The very best unit I've ever had was ordered with a part. I'm a daily attachment guy (I don't wear 24-7), so with that particular unit I could wash it, throw in some leave in conditioner, and then give the thing a shake or two and everything fell into place. The thing is, without help it's difficult to articulate to the factory just where the part is to lie. And there's nothing worse than a part that's off. You can have a perfect unit otherwise, and if the part is off . . . forget it. My belief is that if you're going to have a factory installed part, a template is mandatory because you've got to indicate precisely where the part goes. If you don't, it's going to be off. And just FYI - - my Pharrell person used to tell me that there were variations on the basic part. If you want skin to show, then it's considered a part; however, if you just want hair going in a certain direction without skin showing, it's referred to as a break. Every factory has its own terminology, so be sure you confirm that lingo before using it. Best of luck.