When I push down, ensuring the outside edge is flush with the portafilter all around and I ensure I push directly down, more often than not my coffee is unbalanced, pressed more on one side than the other.
Product of high quality that reduces channeling and increases coffee crema
Educational videos
https://vt.tiktok.com/ZSQYJMmHb/
https://youtube.com/shorts/EHf0-2hmN3g?si=m2-kwpuIYj8m_ccZ
https://www.instagram.com/reel/DZNSO4IM69A/
IKAPE Portable Coffee Maker with 58mm Bottomless Basket- KAPO K2 Pro
IKAPE Variable Diameter Espresso Portafilter Basket 58mm or 54mm to 32mm
A very useful device for preparing espresso.

