Here's my honest opinion about this tanto.
If i'm not mistaking myself the describtion said "razor sharp". I don't know if that was typo because this was not close to that sharpness at all.
I'm 51 years old and I know a thing or two about sharpening blades., so this i can fix myself easily.
The fitting between the habaki and saya is under all criticism. It was so poorly made that if you tilted it the knife fell out. NOT very safe. Again this i fixed.
This was definately not made by an experienced craftman.
If i were you i had contacted whoever you choosen in China to sharpen up, or searched for another blackdmith
After all, this has to do with your reputation. I don't blame True katana. I blame the amateur that made my tanto.