Info about Servo 140:
Slide the wire of the grinder together and form FAN.
Slightly bend the ends towards the rail.
When grinders are too steep steering is not working properly, if grinder is too flat there is no reasonable contact.
When grind- ing dirty grinders with a toothbrush, the older the grinders get the better they will be.
If grinder is too loose, then attach contact plate:
make the middle contact higher than the other two. Insert the plate in the back first and then snap it in at the front. After installing the plate will then sit tight.
Depending on the controller, the two outer or the two inner slots are used. Partially marked A or B