I am pretty new to collecting vintage Bulova watches. I just read that radium is radioactive and this has given me pause. I have already cleaned one case on the Military Miss I have. I have two more watches coming with the same lumed dials and I am wondering if you think it is safe to clean the cases. Not the dials or hands but is taking the movement out to clean the case dangerous as well? I did a search but didn't find a clear answer. Thanks in advance.