I love my KW....we have 300k....had issues with the roof leaking...they fixed that. Driver side mirror whistles, drives me nuts sometimes. Also had a problem with the exhaust scrubber thingy...but I guess the fixed it. I love it!!!
Take to shop and have them turn it down to 39. Problem solved.i have 229k on mine--got it new, and have had a few problems---nothing drastic, tho. front cover leaked oil, turbo blew at 210k, front wheel seals leaked,clutch went out after a rookie used it for a real heavy trailer swap. the trucks do have their limits, but i like it for ease of getting around, and the great visbility-- do wish the mirrors would't whistle all the time over 40 mph!!
We have 3 T300's at our yard. And it's very rare all 3 are in operating condition at the same time. I bid on one of them when they first came in, but soon realized the errors of my way. Even when they were brand new you had to keep a phillips head screw driver on you to put all the dash screws back in that fell out between stops.