Do they re-inflate when operating? It's not unusual for them to lose pressure over a couple of days, especially with such a heavy load constantly on them. You can use soapy water to find a leak if there is one. I think it's unlikely for the bag to leak on a new coach. If it does have one, it's likely a line or a fitting.
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2013 Jayco Eagle 328 RLTS
2021 Keystone Montana 3121RL
2013 F350 6.7L 4x4 CCLB
W/Air Lift air bags (front & rear)
Equal-I-Zer™ WDH & B&W Companion
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