Return gun to whoever did the job. Explain that they have two choices.
1. Remove cerekote from the chambers
2. Replace the revolver.
That should get their undivided attention.
Please tel me they didn't do anything to the bore & that they re-checked the cylinder to frame fit & gap afterwards. If not then only optiion (2) is valid as they really were clueless about what they did.
Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”