I missed this earlier:
– If the ingredients are OK they will not need to be changed, but yes, a new mashgiach can, and often does, require that all equipment be koshered or replaced.
– Please make sure any info you get is about the current Rabbi Ralbag and not his father, alav hashalom.
– This is almost impossible to do since:
It is therefore necessary to consult someone who you know to be trustworthy with questions about hashgochos.