Hi Dudical! Your settings all look reasonable to me, so I can only assume that your printer is not quite "dialed in" to give you the best results. Have you printed any calibration pieces to see if you're getting accurate results? I have no experience with your printer in particular, but one thing to check is to be sure it's not over-extruding, as this is one thing that could fuse the cubes. As with all mechanical models, you can always scale this one up in your slicer to increase the tolerances between all the parts and see if that gives you better results. Hope that helps!