I have a 2015 2500 with the 6.4 and 410 gears and I have not had any issues with the truck or the motor. I currently have 22,000 miles on it with about 5,000 of those pulling my 14,000 pound 5th wheel and i have not experienced any of the issues you are reporting. I will say that after putting about 5,000 miles on the truck it seemed to start running a lot better and I noticed another boost around 20,000. I hope your problems don't continue as you get more mileage on your truck because I think this is a great motor with lots of power. Best of luck.