I am trying to slowly build up a supply for when I go back to work in November, But I am have issues spilling milk out the back cap of my medela freestyle. I used a pump instyle DS and upgraded to a freestyle with DD. I got use to leaning forward with the pump instyle to have the milk in the breastshield work it's way down into the bottle but when I do that with the freestyle I've lost ounces out the backcap. After washing the parts I think I putting it back together right (it looks like the manual picture and it has good suction) any ideas? It's so fustrating to be covered in milk!!!