Equalizer front stabilizer jacks become loose after repeated usage. If not corrected, they will eventually bend enough that they break creating an unsafe condition if the RV falls while elevated. Repairs were performed on my rig where an upgraded bracket was installed. The Equilizer 3724R and 3729R brackets replace the inferior 335586 and 335589 brackets. From what I can tell, Winnebago installed these Equalizer jacks as an option on several Mercedes Chassiss over a number of years.