Yesterday, 01:28 PM
The bottom screw must be FULLY tightened when assembling the trimmer. But before that, as I mentioned, you need to accurately center the plate. Only the top screw is used for adjustment. The mica can lie freely, it is guided by the hole and the cutout. That is why you shorted out, because you loosened the plate mount and knocked off the centering.
If you want to work, lie down and sleep, and everything will pass.