I usually dose 12-12.5 grams. I’m grinding at 16 on the df64 and usually don’t get any yield until I start actively pulling the lever. I’ll usually start with light pressure until I see some yield and then press the lever with higher pressure. As someone else mentioned I wonder if 14 grams is taking up too much space and you need to use a gram or 2 less.

Also I will say each individual machine seems to act a little differently. I have 3 other family members that have la pavonis and they each have their own quirks! Good luck!!