Wow..Four corner jacks rated at 6500 lbs each and two tires per side and just one goes flat or low,and it's a disaster ruining everything...
That's just crazy talk. Do you believe everything you read? Jayco's and other manuals used to say this unit was not made to full time in there for voiding the warranty. So fulltimers were all in breach of manual right there!
The manuals also say to have a certified technician work on most problems... Ut owe... Breach of manual right there changing a light fixture.
The 4 corner jacks set up correctly will keep the trailer from causing any damage to a slide with support jacks just like a mobile home is supported without tires or axles. Poor example but you get the drift off you've ever set up mobile homes.