I am installing a track light. I have all the wires connected and everything works fine. I have the track mounted to the ceiling with two screws at the 2 far ends of the track. My problem begins when I apply the screws through the main harness into the electrical box. It blows the breaker. This also happens if I try to screw the harness cover to the harness, everything works fine until any screw makes contact from the harness plate to the ceiling electric box which holds the wires.
Can you help?

If it is solid wire and room in a box, maybe splice stranded wire to relieve the physical stress.
I like "Live Ends" they are as wide as the track, and not Bulky.
Also need to physically separate hot from coming into contact with neutral and ground.
Should see Good. Shouldn't need meter to test.
If you used longer screws than original, may short out.