Just recognize that I wasn't just saying the trigger was heavy -- THE DESIGN WAS DANGEROUS!!! The first one I had worked on by a gunsmith was a simple trigger/hammer sidelock design, he just filed the engagement notch.
The Lighting, a more complicated trigger mechanism similar to most other inlines, had an adjustment screw but when you adjusted it down to a reasonable weight it would fire unpredictably!!! I learned this the hard way when I once disengaged the safety, and the gun fired instantly! Fortunately it was pointed in a safe direction when this happened.
After that incident, you can see why I no longer trust their trigger designs.