I seem to have some (sporadic and not quantified) issues with dry start for vertically stored (shirt pocket etc.) eyedroppers. Most recently experienced with an Edison (Jowo #6 18k). And before you ask, I have not had trouble when this pen was stored horizontally.
My best guess is that the feed is not properly saturated. Any experience with this? Is this a known phenomenon or an outlier?
-Phil
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