Wanhao D5S mini hot bed clips

Purchased the add on heat bed for the D5S mini which works fine but the supplied magnets which hold it to the bed would often be in the way or would flip onto the print head. the instructions also tell you to put the heat bed right back. This position causes the glass to hit the extruder stepper motor.
Hence the design of the plastic spacers. The sizes may need to be adjusted to suit the size of your glass panel as I am unsure how accurate the manufacturing is.