Have they be redesigned/fix or will they, over time, suffer the same problem like my previous pair of 4XX - screws holding caps loosen over time and fall off. I needed to screw them back together every day. Yokes were actually bigger then caps and I think that there was a bit too much tension from metal springiness involved. After some time they wouldn't even last whole day of normal use and one day I was so pissed and tired of rebuilding them over and over and over again that I throw them into garbage bin. IMHO those are simple an example of bad engineering, or perhaps case of using parts that weren't actually designed to work together in the first place.