Hi Lish, I have tuned up Network so can take more stuff that doesn't come quite exactly to a common point like this , you can get a patch here if you want to try it: http://moi3d.com/beta/Sep4_patch1.zip

But that separation at the tip tends to make a kind of messy resulting surface right in that point area, so I'd still recommend tuning those curves to touch more exactly, or using Rail Revolve.

Thanks for reporting the problem,

- Michael