Hello,
I own a bunch of La Spirotechnique Mistral and Royal Mistral regulators.
I have been diving with one for some years now. I recently started to service some others that where not in working order
to start giving some pool introductions in my diving club. I have 6 now in woking order and noticed something strange.
I tuned them al with the same gauge and they all have the new silicone membrane from this site. There is a difirence in breathing effort
between them. Some go verry well and others are less. What could cause this difference?
regards
tim