First, you should always clean the toppers before you retract them so that doesn't happen. I know it's hard to do, you have to get the ladder out, etc. But I sure did it when we had toppers. Nothing is worse than parking under a tree that drops berries. What a mess!
Our new coach doesn't have slide toppers and I won't miss them. They vibrate on windy days/nights.
Now, that is not going to eliminate me getting up to check our slide tops. We will also need to keep them clean as not to damage the air bladder seal that fills up to block out the debris/air/water that might get up there.
Good luck,
MM.
Mr.Mark
2021.5 Pleasure Way Plateau FL Class-B on the Sprinter Chassis
2018 Mini Cooper Hardtop Coupe, 2 dr., 6-speed manual
(SOLD) 2015 Prevost Liberty Coach, 45 ft, 500 hp Volvo
(SOLD) 2008 Monaco Dynasty, 42 ft, 425 hp Cummins