My rear tyre's air pressure drops to a low level within 24 hours. When inflating my slow leaking rear tyre at the station it makes an unusual fife like sound. The front non leaking tyre does not make this noise. I suspect the fife sound is air escaping from the bead since there is no apparent holes or bubbles in the tyre or valve stem when covered in soapy water. Has anyone experienced strange noises when inflating tubeless tyres? On an unrelated note here is my new light weight centre stand.