I have felt like mine was loose as well. I've heard moving to the 3/3 rear block helps (it's 3/3.5 stock and you have to buy the 3/3)

As for the shock ends, known issue. Whatever automation they use to put them on strips them out. Buy a new set and they will work fine. DON'T reuse the one's that pull out. Some folks have gotten a set free from Losi support, I didn't have the time and for $7 it's not worth the effort.