TWSBI Mini Diamond skips terribly, and prefers writing in reverse

[lamysnib]

I recently bought a TWSBI mini Diamond. I also got a bottle of Monboddo's Hat. Right off the bat I noticed that after I filled it with the ink straight from the bottle using the piston, the pen didn't write immediately. Ok, then it started writing after doing some strokes. I noticed however that sometimes it hard started. Then I noticed that when I drew quicker longer lines it just didn't write at all. Then I noticed that it seemed to prefer reverse writing. I thought the tines were too much apart so I squeezed them together but there is still the same problem. I also flushed the feed and nib section with soapy water, nothing. I drew ink and flushed it multiple times, then drew water and flushed it multiple times. I don't know what is wrong, and I am asking for your help, being more experienced. 

I am disappointed, because I initially tried to avoid TWSBIs because of some bad things I have heard about them, and some other people convinced me that TWSBIs have improved and never had issues. This is my most expensive pen as of now, I got it as a little gift for myself after my Master's Thesis defense, and now I am thinking I wasted my money. Can you tell me how to fix this issue, why can't it keep up with quicker, longer lines, and why does it randomly stop writing? Thank you.

[Doc Dan]

You need to take the pen back to your dealer for an exchange or warranty work. A good dealer will make this right. I have a Pilot that writes like that, but none of my TWSBI's do. They replaced the gold nib and it is better, but there is still a bit of a problem. I don't know, but perhaps it is the converter not delivering ink, or it may be the feed (I don't know if they replaced it). 

[Dip n Scratch]

Looks like an ink feed problem. Are the nib tines out of alignment?

I have to say that I bought an Eco & wouldn't feel happy putting any more money into a TWSBI after the reported issues with the pens.