L Limit screw can get front derailleur close enough

I am following the instructions on here:

https://www.parktool.com/blog/repair-help/front-derailleur-adjustment

And they say:

"Sight gap between inner chain plate and inner cage plate. Only a small gap should be visible, about 1/16″ or 1mm, about the thickness of a dime."

"If the gap appears larger than 1mm at its widest point, tighten the L-screw, in small increments, until the gap closes."

But I’ve tightened the L screw all the way and there is still a massive gap….? (I can make the gap larger by loosening it but obviously that’s not what I want)

What have I missed?