In every kart I’ve owned (2 Shifters and a Tag) or have seen, the rear brake rotor generally has a certain amount of play to allow for Axle Flex. I assume this is particularly important to prevent bind on softer axles. I’ve recently acquired a Tony Kart 401 Shifter Kart. When changing the setup and going over it I notice the rear rotor has tight, no play of any kind. It’s currently using a Medium Axle. Is this an OTK thing? If not - why wouldn’t I want some freeplay in the rear rotor?