I recently got an Airmail Ebo pen from Fountain Pen Revolution (Ebonite eyedropper for 20 bucks? how could I resist?) and the pen seems to built pretty well for it's price. However, I'm having quite a number of issues with ink flow and severe ink starvation. Initially, the pen flows really well and wet when first inked (I think because the feed is primed), but as soon as I've written about a paragraph or so, it starts writing faintly, begins skipping, and then stops writing entirely. Beyond this, when I put a finger over the slit and breather hole, there is no ink that comes off it, whereas most pens I own will typically slather my finger with ink when I do that if they're working properly. The problem is so bad to the point that, when I put the nib up to a light I can see directly through the slit when it should be full of ink. I've washed the nib and feed with dish soap several times and am at wit's end about it. I also am not being able to pull out the nib and feed even though they seem friction fit, so I don't know how to even inspect the feed for defects. Any suggestions on what I should do or what the problem might be?
If it's of consideration, I've tried it with Pilot Black, Noodler's Black, and Waterman Black and all have suffered the same issues, and the issue's actually gotten worse the more I've written (I could go a full page without it drying out a few days ago, now it's about 4 lines).