On my mountain bike I have Continental X-King tires (tubeless ready) on tubeless ready rims. I rode them a couple of times with tubes and now I went for tubeless setup with Stan's NoTubes Sealant.
At first everything looked fine, but they keep on deflating slowly. From 3 bar to 1 bar in roughly 10 hours. I've submerged the tires in water to see what's wrong. There are no major cuts or holes, just very small bubbles are leaking through the sidewalls. I did a couple of rides to distribute the sealant inside the tire, I also tried leaving the wheel laying horizontally overnight, but no luck so far.
Is it going to fix by itself after a few more pump-ups, or is the tire bad?