Yup!So I'm NOT the only one! Thing I struggle with is the initial Snap-down of that thread past the tightest part of teeth ends up cutting my Gums and makin' 'em bleed for a bit. And I'm always nervy around the underside of some of the crowns in the back. I've had floss get caught/stuck in there with the gum holding it under a lip the crown makes. Which can be a PITA with a pre-built flosser/pick
I much prefer toothpicks and those fancy tooth pick imitations. Then use a water pic loaded w Listerine & warm water and go to town...