A couple/few years ago, I did something against a rock wall that resulted in the original Mopar soft top becoming floppy at a corner. After a quick look, is was clear that I bent the rear bow more than it had been. I fixed it as I described by supporting the bend with a block of wood on the wheel well, holding the B pillar attachment in one hand and the rear upper end in the other hand, and pulled down to spread open the bend.
I tested the soft top fit a few times and repeated until I liked the tension. I have no idea if I maxed out anything. All I cared about was getting the soft top tight on the frame again. Which I did.
That same frame currently lives happily under a BesTop Replace A Top, which is quite snug.
I don't know anything about King soft tops either, btw. This is the first I have been made aware of them.