Agree with all above. And as the Crabman said, if your unit came with them, recommend you use them. The manufacturer would probably not have included them (additional cost) if they weren't needed. JMHO
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.