When I press the switch for one second there is a horrible grinding noise from the stepper motor in the 3D chameleon. Is this normal? When I tried printing, the firth thing that happens is the grinding noise, then the chameleon unloads one of the filaments so that it ends up far away from the y, then the printer starts "printing" with no filament loaded. I used the gcode generator. Not sure what else to do other than perhaps changing the code to press the switch 3.5 seconds to load instead of 5.5 seconds. The grinding noise is a concern.

Most of the videos on your YouTube channel are private including many that are linked to from your website. Last year YouTube changed the way it handles unlisted videos and converted all older unlisted videos to private videos. I’d really like to see more of your videos before I buy, could you convert your videos to public or back to unlisted please?