So I've been having fantastic success lately with the double basket that came with my machine, and recently bought a bottomless PF in order to analyze my pours. The new PF I bought came with a triple basket, and in order to get more into my morning Americano I figured I'd try to use the triple basket for more of a dose. Unfortunately, whereas I get a steady, even, consistent pour with my double basket routine, the exact same routine (with 5 more G of coffee into the basket for a total of 23g) gives me messy, spurting coffees.

My routine for a double basket

Dose 10g

Bang on countertop once

Dose remaining 8g

Use WDT method

Tamp

Flush

Pour

Enjoy

My routine for a triple is the exact same, but with more coffee that ='s 24g

Can anyone point out anything obvious? I can take a video if you'd like, but just imagine a messy shot with spurts and messy tails coming out everywhere.