The hydraulic brake caliper on my bike is slightly out of alignment. It's not fully rubbing, it more or less looks like the slight rub picture here - https://www.parktool.com/en-int/blog/repair-help/hydraulic-disc-brake-alignment. It doesn't appear to affect the bike's performance, except that occasionally there's a slight noise.
I'm a bit worried that as my brake pads wear out this might mean that there is enough clearance for one of the pistons to fall out completely/lose braking pressure. i.e., if one of the pads is further out than the other, and the brake pads are sufficiently thin.
Does anyone know if this is a possibility? I don't have a torque wrench so I'm a bit worried about properly reattaching the caliper if I align it.