Been spoilt and got given a Sage Barista Express for my birthday, but struggling to get to grips with a couple of things. Firstly, is it normal to require completely different grind and dose settings when changing between a single and double portafilter basket? If I dial it in for single it then completely under extracts for the double if I leave the settings the same. Secondly, I’ve been following guidelines for milk texturing but always seem to end up with a cap of over-foamed milk that then pours first, so latte-art (although not important for taste) is not an option. Any guidance / insider knowledge on the machine would be mich appreciated.