Martin, that's equally for MGIV matt and MGIVWT semi-matt? Do they behave the same? I manage to flatten 24x30" Emaks (graded glossy FB) cut from 42" roll under RBB 20x24" easel relatively well. Once it lands in the tray, it's soaked and flat within seconds. Drying it flat isn't all that easy, whereas WT semi-matt is a joy in this regard.