Layers not in alignment

Hello.

I’ve had my K8200 up and running for a week or so. Have started printing some parts and I am quite happy with the quality. There is some minor issues (print bed not flat, I have a piece of glass on order to fix this) and my layers seem to be out of alignment. It’s difficult to explain so I have uploaded some pics.



The reading I’ve done leads me to believe this is a ‘z’ axis issue (layers not the same thickness) so I have ordered the parts required to carry out the ‘z’ axis upgrade detailed here.http://i60.tinypic.com/jv4rph.jpg

Am I on the right track? Or is there another underlying problem causing the layers to shift/miss-align?

I’ll be hugely grateful for any advise you may offer.

Kind regards.
Justin.

Sorry, the image links don’t work

Yes sorry, I did not post the links properly.

I also realised I posted this in the wrong section. I have reposted in the “problems while printing” section.

Thanks.