The dry out problem on the wooden models effectively made the pen useless. It would be interesting to know if the same problem persists for these models
I had the same problem with all three of my M6 ( black/red/tiger stripe ) and also with the M600s.
The M6 would dry out after a minutes or few hours.
The M600S would be dry after around 1 day.
tried Iroshizuku , pilot namiki, edelsteins all have the same problem, flushed the pens already, even using ultrasonic bath.
another problem with this type of moonman, the nib sleeve is quite brittle on the lips, but since replacement are quite cheap,bought a lot of them...nib is very smooth.
The moonman M600, C1 & C2 doesnt have this problem..
I surely hope the moonman m8 fixes this problem.