Are these rear axel bearings part of the control arm? I ask because after 21 days in service, the dealer wants to replace the rear axel bearings as an option to fix my brakes from pulsating. They said this is polaris techs final answer to fix my brakes? I'm just wondering because the swing arm was replaced under 1 year ago. And they want $300+ to replace these supposed bad rear axel bearings. Any help or info would be great. 2016 slingshot sl with 4000 miles only.