Beware 3mm!

I who love have relatively short hair, I settled 3mm shoe and cut proved to be a mess, it is not regular at all! I also "holes" in my hair.
I concluded that the 3mm is not working properly. The removable shoe being HUGE can not properly mow the lawn behind the ears ... It was for me a BIG mistake of buying this mower. I GREATLY disappointed. This mower does not match my expectations!
Also, there is not the ability to cut hair without the hoof unless you want the 0.5mm that is to say the very short!