I just bought my second bronco yesterday. its a 82 351w 40k rebuilt. 140 normal. I need to find out why the back seems to be jerking. I bought it and the guy said the MSD ignition was bad. it ended up being the MSD coil. My friend shows me the hubs and they say there locked according to the hubs. so i switch and take the first drive. its jumpy on turns. would that mean the hubs are backwords but drives strait fine and now jerking/jumping. so i go and lock the hubs and the thing doesnt spin the front tires. i am wondering if they were installed backword so you have to do the opposite thing to them.