Hey everyone I need some help. I bought a 90 xj a couple months ago and it needed some love. I fixed it up a bit but during the first snow fall I put the 4x4 on and it felt like something was holding it back. Turns out the front right tire was locked up. So I brought it back home and now even the rear right tire is locking up. I tried to take it out of 4x4 but it wont come out. Im fairly new to working on 4x4 so I don't know what is going on. If anyone has any idea that would be great.