I ordered the 4 pack of Wing Sun 3008 from Amazon. 3 of 4 pens leaked at the silver ring at nib end of the grip. I'm sure the 4th will leak but it's not inked yet.
These will be the LAST Wings I buy but to salvage these 4 I spread a thin layer of silicone adhesive at the silver ring joint where it meets the grip, then secured a section of heat shrink tubing (used in electrical insulation applications). This seems to have created a fix.
! But leaky pens should not be sold by any manufacturer at any price !
Edited by crossstick, 16 May 2019 - 15:22.