I am using the Breville Barista Express and dialed in the grind amount for the 1 cup filter basket to the perfect amount using the single filter size option. I assumed that I could then keep the grind amount dial setting and use the 2 cup basket and select double filter size but it overflowed so much I had to discard about a 3rd of it.

do I need to dial it in for both single and double filter size or is there an issue with my machine?

**note. This is on grind size 5 and the Gring amount at 12 o’clock