Sorry if the title is a bit vague but I recently got my hands on Jinhao Dadao as a gift for someone. But the pen skips on all the papers and some of the inks I have tried. Though this is one of the smoothest nib I've ever written with.
The seller is offering me a replacement nib but I'm not sure if it would work and if there’s a chance problem's with the feed drying out. Can I somehow rule this out?
I have a 14 days return period from Ali but if I accept the replacement nib it'll be over.
The tines may be too tight so my suggestion would be to floss the tines. It should be no problem if you have a brass shim. It's worked wonders on a number of my cheaper pens to fix ink flow. Although I have noticed that the flow is slower on my 9019 as well.