I wanted to add a comment about the scraper box riding up onto the rear tire.
Shortly after I got my DK45S in 2006, I was mowing an old field, chopping down the saplings. As I rounded a turn at the end of the field the mower rode up onto the LR tire. Let me tell you it is exciting to look back and see those blades coming closer and closer to the tire...and your face!!
Theoretically, it should not be possible for this to happen when everything is installed properly. After some discussion with my dealer, we deduced (or is that theorized?) that a sapling stub must have hooked the bale pin on the left lift arm allowing it to slip off the shaft (is a fluke occurrence like this just too unlikely??). I have replaced both these pins with bolts, just in case.
Warrantee covered the various bent parts, though I have some dinged lugs on the tire. Its a great way to get the heart rate up, I must say!
BOB