Hi guys, I bought two Souboku bottles about 10-12 months ago. Both were used without any problems. Today I notice there're some strange particles on the ink's surface of both. No odd smell. MB 149 filled with this ink was left untouched in the leather case for at least 2 weeks and It still writes nicely. The ink seems to behave well. I try my best to take the pictures attached below. Thoughts??