hey fellas i have a jammin one of my diff has a snag in it. If i remove the motor and roll the vehicle it free wheels then comes to a sudden stop. If i put it on the ground and push it. Theres a snag somewhere. How can i narrow it down to which diff.

try holding each end off the ground & roll just one set of wheels. that may indicate whether its front or back but it could be the centre diff as well.