I was repairing my heater valve and when I took it apart it had three shims, one thick, the curly one and a small one before the big one at the base.
Now, I was following this video here and he didn't had the third plate that I have on mine?
https://www.youtube.com/watch?v=efezlZ0Cb1w&t=381s
I removed mine and left it as it was in the video and have perfect heat at speed and at idle.
Model is Bosch 1147412010
My question is: Are there different models and should I put the third shim how it was from factory?