How to Prevent Coffee Grounds from Spilling Over Distributor Tool?

Ive been using this distributor tool for my espresso setup, but I often end up with coffee grounds spilling over the edges like in the photo. It’s not a huge issue, but I’d love to keep things tidier.

Does anyone know what I might be doing wrong or have tips to avoid this? Could it be the grind size, dose amount, or my tamping technique? Any advice would be appreciated!

Ive been using this distributor tool for my espresso setup, but I often end up with coffee grounds spilling over the edges like in the photo. It’s not a huge issue, but I’d love to keep things tidier.

Does anyone know what I might be doing wrong or have tips to avoid this? Could it be the grind size, dose amount, or my tamping technique? Any advice would be appreciated!