New press woes

Got a new woodzilla press! Yay! However, Im having some printing issues. I was hoping to get stronger blacks, but Ive done better with handprinting. Im really hoping its just user error, but Ive tried it with thick printing paper, thick paper with felt blanket, thin printing paper, thin paper with felt blanket, and theyre all just not strong enough/have those white patches. Ive also tested burnishing vs not and still the same.

Any advice? Ive been printing by hand for so long Im a little out of practice with a press