Got about 5 packs into my new exb build and I believe a twig that got stuck up in the rear a arm toasted an inner bearing. With the open rear design this got me thinking this could be an ongoing problem. Using the front cvd style setup in the rear sounds like a good plan but upon searching I keep seeing conflicting information about whether or not these just bolt right up and work as they should. Anybody done this? Any issues with them being too tight or loose?