always keep a spare chain in the truck. fixed tons on the hill. it cant "LOCK UP" like the diamond drive so at least the track will still spin if it blows and you cant fix it
Last year a guy i was rideing with his dd locked up on his m8, it had a hole bunch of brokenteeth off the gears inside. All we did to get it off the hill was put it in reverse and gave it throtle to spit the gears back out the other way. We had to do that a few times on the way out of Clemina. But it was a total rebuild after.