X/Y axis extremely wobbly

I had a problem a while back that was most likely due to XY-carriage alignment. I tried this: k8xxx-3dprinters.crimed.be/w … _Alignment
First, the axes simply had a lot of resistance, but now a new problem arose. The head moves smoothly, but the axes wobble a lot. As soon as it “woobles”, it locks up and cannot move.
Uploaded a video so you can see what I mean.
youtu.be/93Cwcb6Ekq4
Anyone know what to do?

UNSOLVED

From what i’ve seen in my assembly…that looks like no Iglidur bearing or the carriage screws not fastened?