E3D v6 vulcano fan duct

In search of a fan duct for my Kossel XL, I found the Mini Kossel E3D V6 Effector & 30mm Duct fan (thing:1373201). I like it, because it is compact and cools the hotend as well as the object. It does not blow against the hotend as some other fan ducts do, in my opinion that is a good thing. I could not use it unmodified however, because my hotend has a vulcano heater block, which makes it a bit longer. Using Tinkercad, I modified the design to fit my E3D v6 with vulcano heater block. The alumini