Can you see the bottom of the t-case and sm420 with inspection covers off ? I guess I'm gonna find out here shortly, happy Tuesday, Went to for short trip to hardware and bang, surge, what was that ? everything functioning however I noticed some a****** had locked in 1 of my front hubs, maybe something happened in the front end, since the front shaft was turning maybe the collar grabbed , I hate searching for the issue, lots of work trying to figure it out, oh well, haven't been into the front diff since Jeff rebuilt it.