Kingko

Thanks this looks like it will work.

Looking for advice. I have a print that I want to have solid fill for about 30 mm up but want to switch profiles so that the rest of the print has 25%. As it is I am making a Double Helix and the structure is strong enough but I want the base and part of the spiral solid to have greater strength. Almost sure that it can be done. Ender 3 Ultimaker Cura

On the printing bar, on the right side there is the vertical rail mount. The three wheels can be tightened to provide more support to your printing bar. You could also check the frame, to make sure that you have no wobble and that it sits flat and stable on your table. Pretty simple to check and fix.