Jacks under a slideout will, in most cases, void any warranty for the slideout.
Those kind of Jacks are holdovers from the early days of slideouts when the technology was new.
Modern slideouts don't need them.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC