My friend went wheelin last montha nd he said his friend didnt properly lock one of his hubs on the other side. 4wd kjept slipping out .... and he kept putting it back in... later on he fell in some ruts and trying to get out he heard metal screech and break. And finally he got out.. on the way out one front tire locked up and wouldnt move... then he unlocked his hubs.. we testted it again and when he tried to go in 4wd w/ both locked hubs both tires locked up and wouldnt move up front.. anyone know whats wrong? 6in 87' K5 w/ 35" BFG muds. Kn filter What I need: 4.11 gears, Lim Slip Dif, Force2 Catback, rear springs , Throtle body spacer.