Hello, I bought a 1998 2.5 in September and I'm having a problem where if I'm rolling in 4hi for a while it will pop out and I get a loud grinding coming from the front of the Jeep and I can't move until I put it back in 2 wheel. It happened once when I hit a big pot hole and once while driving through deep snow. I do have a 4 inch lift with t case drop. The lift was installed before winter and I only started using 4x4 in the snow so I'm not sure if this issue was present before installing a lift. Any insight would be much appreciated 
