Shouldn't need them if you level with blocks... although, many folks refer to them as stabilizers also... so I don't know what to tell you about stabilizing other than getting some scissor jacks to put underneath then to help with rocking when walking in the MOHO ... that is what we do when up on blocks....
well, ok, I posted... but like the fella above's answer better.... but if your others don't work... this is how it's done!
Martha (AKA RVM45), Bob, and Bess the Border collie
22'Honey Sportscruiser on a 1988 Ford Econoline.
Sometimes towing a powered Parachute.