I dont have a DS but one of my friends has one, it was not long after he bought it a group of us was riding and his rad. hose blew off. It was the one that was on the left side of the eng. The clamp was probly not tightened very good from factory. Be sure to check your hose clamps so this doesn't happen to you. Other than that he has had no problems with his DS.
Take care, Bryan

 

Oh no man...i had that same problem, sure i just tightened it, but then 2 weeks later it will come off again, and let me tell you that fluid burns to beat hell! We had to grind the nipple so it was more of a rough so the clamp had something to grip onto to hold the tube. I dont know why only a few had this problem, but Mine sure did.