1. Please allow 1-3mm error due to manual measurement. pls make sure you don't mind before you bid.
2. the color may have different as the difference display, pls understand.
1.Question:Why does it curve up after use only 1 time? (53.5mm)
Answer:You overfilling you portafilter. If it is squished against your group head it will bend.
2.Question:Will the 53.3mm fit in a 53mm portafilter, 58mm fit in a 58mm portafilter?
Answer:53.3mm fits the 54mm portafilter, 58mm fits the 58mm portafilter.
3.Question:this does not allow my silver puck mount in machine its too thick and my normal screen is in the the way. should i remove it ?
Answer:It sounds to me that you are using too much coffee. Coffee in the filter basket should be low enough to have the puck screen a bit below the rim of the filter basket. Try reducing the amount of coffee.