I would venture that it's because the hose is so short on a standard regulator, the one your donating
... if you want to travel any distance with that setup someone is going to be on their back , and it's still tight .. another reason to get a longer hose for your reg than the short one it comes with
... if you want to travel any distance with that setup someone is going to be on their back , and it's still tight .. another reason to get a longer hose for your reg than the short one it comes with