Don't believe that unit came with hydraulic jacks as standard. Keystone didn't start using them until just a couple years back. Otherwise, he should try the Montana Owner's Club forum - I'm certain there are other owners of the same year and model that will give suggestions.
2010 Montana 3665RE, wet bolts, etc.
2006 Ford F350 Diesel Dually, air bags, Softopper, Aeroshild, etc.