Question for all you suspension gurus, I had center point suspension and wet bolts done by Lippert at one of the Rallys in Goshen, I think it was 2013. I hit the zerk fittings once or twice a year with a little grease. I have 7K axle and 8K springs. I have put on several thousand miles since. Should I have these wet bolts re done again?? I have not had them looked at since the install. I just don't want to have any problems. I think at the time they were using brass inserts on the wet bolts but not sure on that. Any help on this would be appreciated.