Does anyone else have this problem? I swear it feels like I'm riding in a damn Chevy. If its a calm day it wont start doing it till 90+ MPH. But right now I'm driving down I-40 into a 30+ MPH wind and it will start leaking around 50 which I've tried sealing with duck tape with no luck. I've been in several other 6.7s and 3 different 6.4s and none of them have this problem. I'm just trying to figure out why mines so different.