I have a problem with thinking particles leaking through a deflector. Basicly I have blood cells going through a vein which has to shrink and push the cells more and more closer. I use Pstorm in xpresso and vein as the deflector. As soon as it the vein doesn't move everything works pretty well but when the vein shrinks/moves the particles start passing through the vein. As soon as the vein reaches the final shrinked state it works again well.
Do you have any idea how to avoid passing particles through the deflector while it is shrinking?