Quick set coming undone

A couple of times now I’ve been wearing a quick set and it’s come undone literally. Has anyone one else had this happen to them? It’s a shame because I actually use both the silhouette and the quick set and like both for different reasons. Now though I’m thinking I might not use the quick set because it’s come undone so many times. I try to make sure that the triangle is where it’s supposed to be and that it’s locked in but still it comes undone. I usually have it located on my stomach so nothing is rubbing it or anything. Has anyone else had this happen to them?

Once in a while, but not consistantly… Everytime I reattach I do the “Tug Up and Tug Down” thing that the pump educator told me to do to make sure that the set is secure. You grab the tubing close to the connection and just tug the tubing up and down. If the click on the connection is not secure it will come undone.