@2xhorn,my Jaipurs (I have 3now!) are wet writers (though the pen with a M nib is less so), but none of them behave like this. The ebonite feeds that come with a flex nib are designed to be even wetter than the standard feeds - so maybe that's *part* of your problem? - but it may also be a fault. At this stage I'd be dropping FPR a line, if I were you, and asking their advice and/or for a replacement.
Thanks again for your feedback. I'm not vastly experienced with pens, but the Vanishing Point broad and Jinhao are both pretty wet writers and I haven't had this type of leaking issue. That is, I can do the vertical shake without drops spitting out. However, I recognize that that is probably not a particularly fair test of FP behavior. It hasn't leaked while writing, which would be unacceptable.
After a Friday and Saturday morning rolling around on my desk, there is only one, relatively small drop in the cap. That is pretty acceptable, although Friday and Saturday are less "vigorous" writing and using days than the rest of the week.
In the course of seating and re-seating the nib and with your pointer on misaligned nib/feed, I noticed slight scratching and a click as I rotated the pen while writing, indicating that indeed the tines may be misaligned. So I emptied, and re-seated very very carefully trying to preserve alignment (the relatively narrow and curved nib makes it pretty hard to tell how well aligned the feed is relative to the nib). Then, it was much smoother, and I couldn't make it click rotating the nib relative to the paper. But I noted that there was some daylight between the feed and the nib, and lo, it stopped writing/feeding. Therefore, without reseating, I tried heat-setting the feed, thinking it might also help close any gaps between the feed and section that were permitting the leaking (if indeed that is what it is). I do note that there is a bit of flash on the end of the section, but it doesn't appear to affect anything on the inner diameter, that I can see. Perhaps that has helped. Time will tell.
I almost ordered this with a flex nib, as I have wanted to try one, but decided that I may not know how to write with one, so I didn't. I may order one and/or a broad and see how those do before lodging any sort of complaint.