X-axis belt fine tuning
I’ve gotten up to the (updated) step with fine tuning the x-axis belt and I just don’t understand what it’s talking about.
It says to First, slightly release all the screws holding the motor, otherwise, the upper "tensioner" won't work (the motor must be able to move).
If I “slightly release all the screws holding the motor”, the motor doesn’t seem to move at all. The only time it seems to move is when the screws are totally released and then the motor just falls off since nothing is holding it on anymore....
It’s probably something obvious, but my brain seems to have taken the weekend off.... 😳
Thanks,
Greg Remind me to put something witty or profound here sometime in the future. 
Re: X-axis belt fine tuning
Step 18 Fine tuning the x-axis belt (new design)
I don't have a MK3, but from the picture it looks like the top 2 screws are slotted so the motor should pivot on the lower right screw. It might be difficult to move if you've got the belt tight.
Using Allen key start tightening the M3x18 screw inside the X-end-motor, but after each turn or two check the tension in the belt.
-Kevin