|make sure to consider the impact to the seals between the two caliper halves. Replacement seals aren't available for this interface, only piston seals and boots are available last time I checked.
Some (including myself) have reassembled the two halves using teflon o-rings in a matching size. I'm sure others have just crossed their fingers and hoped that the internal seals weren't compromised.
I'll refrain from making a recommendation either way :)