It's weird 'cause like only those 4 parts have this problem, every other bdb part that uses Liquid Hydrogen is not affected by this problem. Here is the link to the KSP log: https://drive.google.com/open?id=1XLzXuA4KM4MnQOOjPw9YOr-_XJIM501b I'd like to post the Modmanager config cache but it's not being created..