I realised last night that I'm an idiot. I'd forgotten to replace my fuel scoop with a cargo rack so I've had a needless bit of kit on my T9. Admittedly, it only made a difference of 16T, but I felt a bit silly. I think it's because I tend to fit a fuel scoop as default as I tend to roam a fair bit (although that was never going to be the intention with the T9).