Hi Hedo. Mine seems ok. Just some little difficult when i close it. Anyway, I would ask you, how much did you pay for your 1st service? I reserved my first service for 200,00 euros... (that seems too expensive)today at 1st service, they blown compressed air into the small hole in the middle of the two nuts on the left. here is picture, you can see it on left (gold spot)
this is the tank breather.