I took my 89 burb on a 90 mile trip through the Colockum Wildlife Area here in WA this weekend, not in 4wd alot but a lot of bowling ball sized rocks, ruts and the like. Did I mention dust? Anyway, coming home home on the highway I start to hear a chain draging sort of noise coming out of the t-case. (belive it's a 241) slow to a crawl and pop, the noise would stop. I noticed the front drive line was still turning in the parking lot. Ideas? Thanks!