Leaking Wahl Adjustable #9 lever fill pen, please help!

[Biclove]

Hi all, longtime lurker here. Bought this Wahl adjustable pen off eBay. The seller said they cleaned with ultrasonic cleaner and changed the sac. I sent the pen off for a nib adjustment and came back my favorite writing nib of all. It would leak some a bit into the cap though - maybe a little more than a modern pen. I sent off to a respected vintage pen repair person who replaced the sac with a smaller more appropriate. It still leaked so I sent it back and he used some silicone. I noticed that when I carried in my shirt pocket for 30 minutes or so around, when uncap it the ink spilled everywhere. I then used water and water didn’t leak. I then finally pulled the nib and feed out and reset them as firm into pen as possible and this morning uncapped and ink spilled everywhere again. I’m at a loss. What is strange is that the section appears to be sunk into the pen and there is no o-ring or seal on top of the section. Any ideas to keep this pen from completely emptying ink on me?

[FarmBoy]

Does the feed have the cut-outs for the slider on the nib?

 

Pen looks small for a 9 size nib but that could be perspective.

Did you ask Syd about this?

[Biclove]

Actually just got off the phone with Syd and sending to him to get fixed up. Yeah this #9 was factory narrowed at the bottom to fit into a smaller size pen. Wahl should’ve been thinking 100 years ahead people in general would prefer larger pens! I think he’ll report back his findings others can see in a few weeks.

[Wahlnut]

The section is either a 1-piece or 2-piece construction.  It should be a 2-piece unless maybe the pen has a drilled double check gold seal (but that'smaybe leads to another topic entirely).  Assuming it is a 2 piece "Personal Point" section the nib/feed holder is a screw-in element that if cracked will definitely leak a lot.  Replacement of the inner nib/feed collar/holder may be necessary.  I can not see the detail on the feed tail, but it should have a flat that fits/seats into and through the matching flat hole in the nib/feed collar which then screws into the section.