Can't Mesh Face In Gambit
 

I'm trying to face my mesh in gambit and I have two faces, the larger one called FFB gases. The small face is called leaf and has a boundary layer around it. Trying to mesh it under tri and pave and it says ERROR: The remaining intervals on Leaf Top must be a multiple of 16 in order to properly mesh b_layer.1 on the combination of FFB Gases and Leaf Top