While participating on a project had to made adjustments on the boost and limiter boards. All the light and squinting didn't help me find the slot in the screw. A little touch of White Out on each, and DO DA.
The screws that hold the AristoCraft track together are much worse. They are really tiny and made of stainless steel so a magnet will not attract them. You have to put grease on the Phillips to make them stay. Then if they fall in the ballast...., "bye bye."