under-extrusion (missing layers) issue

Hello!

I have a Qidi x-one printer and I'm running into what seems to be an under-extrusion (missing layers) issues. I recently changed my nozzle by watching this video:
[url=https://www.youtube.com/watch?v=iBlaGh-RZSI]

Here is a video of what my print looks like:
https://drive.google.com/open?id=0B2X9pTOR8n24YUZoUmVpR2VXVzQ

and here are my settings:
https://drive.google.com/open?id=0B2X9pTOR8n24ek1iMTJmc1FzMVk
https://drive.google.com/open?id=0B2X9pTOR8n24bXFZR01PNG9EVzA

Any help would be greatly appreciated!


Stavro