I own three different Supertucks, the Wife has one, and my son has two. Sometimes you need to tweak them to suit your draw.
I have used a hairdryer for the ones I wanted to change the drawing resistance. Slowly heat up the area depressed into the trigger guard. Gently push it in to tighten the draw or reach inside the holster and gently push that depressed area out to loosen. Check the fit with your pistol.
"Gently" is the key once the kydex gets soft. It only takes a smidge to totally change the resistance. If you pushed too much, warm it up again and put it where you want it.
It takes me longer to sneak the Wife's hairdryer and get set up than it does to adjust the holster!