jep, keep the anti z-wobble away fromt he printer. if you have wobble there, get new rods. the anti wobble thingies will only put strain on the motors and those rods are actualy designed to have space up there.
that gopro case doesnt look to good btw. you shouldnt be able to see those lines. that be could be to high temperature (looks like it), bad calibration (overextrusion, wrong values for the steppers) or loose belts (head doesnt stops where it should stop)
a few tips:
- do not put the spool on top of your printer. ther acrylic frame will only wobble more and further decrease your quality.
- do temperature calibration runs for each new spool you use. every spool is different, even if it comes from the same company
- put these on your frame.also helps eliminating wobble a bit.
PS: chains are fine if they are properly printed and smooth to move