I too have a hairline crack to the gauge and the argon is rushing out through the bypass too.
I am sure the guys will send out another replacement. Never had a problem with their tech support in the past!
I also have aleak at my regulator, at the bypass, I have contacted everlast and was assured a replacement has been sent, but have not seen it as of yet, hopefully it will show up monday as that will be one week from shipping.