I've been experiencing lots of issues with the airstream protective shells recently and I can't figure out what's going wrong. I've made three ships that work fine without a shell recently, but then when I add the shell, almost every part explodes upon loading. I've tried adjusting the size of the shell, I've turned the interstage nodes on and off and I've disabled the truss structure, and still my ships just explode every single time I try to load them. I even had one flight with a shell on its way to Duna that launched fine, but then when I loaded it later, it blew up too. This is really frustrating and I've tried everything I can think of. Any suggestions?