Been lurking for a while, lots of great information here. I'm going to attempt my first bearing job this weekend, I don't think the bearings on my new to me but used boat trailer have been serviced for many years. It does have bearing buddies on it, which have been on it for at least 10 years and perhaps since the trailer was new (20 years). I'm not completely sure of the history here. Do the bearing buddies wear out and need occasional replacement, or would these likely still be good to continue using?