Hey guys & gals, I just got a Pelikan 140 EF via eBay. (Early Christmas gift to myself.) I knew the 140 had the longitudinal fins along the feed, but I was wondering if they function differently compared to feeds with the horizontal fins? I can't imagine this is purely an aesthetic decision by Pelikan. Anyone know why the difference? I will say that this is probably one of the wettest pens I've used based on my "extensive" 5 minutes of use so far with R&K Scabiosa. Thanks in advance! M5