You might want to print this, if the nozzle holder collides with the baseplate:

https://www.printables.com/model/576604-handle-spacer-20mm-858d-smd-soldering-station

Made in OpenSCAD, the source files are attached. They combine these models

•  “JBC on 858D cradle” 
• https://github.com/kennetek/gridfinity-rebuilt-openscad
• https://danielupshaw.com/openscad-rounded-corners/