I think the bronze bushing is a wear bushing, designed to wear instead of spring-to-bolt wear. Grease should definitely prolong the bushing life.
Joe
When mine were checked/replaced last season, they put the plastic bushings in--I expect to install new wet bolt kit before next season for the AK trip.
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2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired
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