That is common with any set, and I am persnickety about drywall anchors. Pushed hard on the A7iii the lens did miss focus. With these you can adjust tighter. Recomendable sin duda y comparados con otros que tengo como son shure 215, Bose soundtrue ultra y echobox finder x1; estos ie40 los supera. 2- I had to put an old sock under the tube where the seat fits, because the screw was never tight enough and the seat was rotating, without any stability or security. This body suit amazing! Most of my wedges fit standing up, but my heels had to be laid on their side. Its great, a bit long BUT thats OKAY, I can now listen to music on my Galaxy 20+ 5G, my headphones that came with it crapped out so now I can use regular headphones with this adapter. They are comfortable, lightweight and most importantly, they stay on my ears. The little toe loop was a new thing for me, but it doesn’t bother me and probably helps keep them aligned.