I believe I have a hole in the stem of my regulator unit at the flange where it connects to the CO2 tank. I have always had problems with it leaking gas there, but have always managed to get it to seat so that it was not leaking, until now. This is the first time I've actually looked and noticed the hole in the flange. I'm assuming this is not normal, and I've just been lucky to get it to seat before. Please see the following photos.
I've circled the problem area in each photo. If this is normal, then is there some trick to getting it to seat correctly? If this is not normal, can just the affected stem be replaced?
Thanks in advance for any information.