I'm pretty new to discs. (About 4 months old Formula oro K18s). Changed the tyre over on my rear wheel and now, having had it set perfectly, it's rubbing. I can easily unscrew the caliper and re align that but surely this shouldn't happen just from removing the wheel should it? Wheel and disc look straight and pads are not significantly worn.
Have I done something wrong?
Any advice gratefully received!

