Helped my friend buy a bike with tubeless tyres, and he got a slow puncture on his first ride. I have not been able to find the puncture, and have added around 60ml of sealant. I believe the tyre is still losing pressure slowly, without even being ridden on. How do I go about identifying the fault? I seem to have bad google-fu and haven’t found anything relevant on the internet, which tells me that I am not searching very well.
Thanks for any pointers anybody can give me. It’s going to the LBS today if I can’t figure it out, but I feel pretty embarrassed to be so clueless about it.