Totally agree. I carry 3 tubes always.
Word of caution do not use on slide-out gears or racks. The grease accumulates dirt at a rapid pace and will cause more problems than it cures.
I use a dry lubricant specially formulated for slides; but there is a commercial product available at the home centers that works well too. Just remember "Dry Lubricant."
Lou, Laura, & Freya the wonder dog
2008 GMC Sierra 3000HD Crewcab SB Allison Duramax
2019 Flagstaff 8529FLS - Pullrite 3300
HAM CALLSIGN - KC3FFW