So I literally just unpacked my new Miss Silvia, watched a few videos and am doing ok. Need alot of practice though to totally connect with this machine. This is a strange question just about appearance. My group head has a red dot on it. I originally thought that was like a stop mark when putting the porta filter on the group head but have realized through videos i was trying to twist way too far around and no machine on the videos has this red do. Does anyone know why the red dot?