Cleaned the G3 today and put fresh mesh on the feedpump. It is true that you need to replace the mesh after a while. The Sedra 5000 is still stock with needles but the GenX 1500 has new mesh. It fills the entire body of the G3 nicely with milky white froth. 
Milk...it does a G3 body good.
Milk...it does a G3 body good.