I had the same problem with my Salton juicer, after making a delicious juice it was almost impossible to remove the auger like many of you, with patience and lots of elbow grease I manage to take apart.
Here is my solution to this problem and it works very well for me,
its simple, before juicing, disassemble your juicer and
add a little oil with your finger on the silicon seal (
inside and outside) see picture attached, assemble the juicer.
After juicing, remove the cover, don't try removing the auger, instead
grab the basket and wobble it and it should get free, it works for me and it should work for you too. Happy juicing to all!