Brake lights staying on

Hole in MC for the pushrod is a 1/16" more rearword?

The switch would have been set for the MC that was installed. You put a new one in.

The reason I know this is my dad replaced the MC in my dart and had the exact same problem.

His solution was to install a return spring. After he passed and I inherited his Dart. I did not know that he had had that problem but I found a funky spring hooked to the brake pedal. Not knowing why it was there I removed it. Next day the brake lights were on.

I climbed under the dash and adjusted the switch, no more problem.

He had had the MC replaced, a day or so before he found the brake light on and added the spring.