If you remember, there were people with VGT's sticking when they were first released. This was mostly the people that drove the trucks empty with tow/haul disabled. My trucks always get 7500-10,000 miles year in tow/haul with a load which I think contributed to no turbo problems. Some of the Ram owners run full exhaust brake all the time - I think they are giving up mileage with this setting but perhaps preventing stuck vanes. Interestingly, some people contribute the head gasket faults on stuck turbo vanes creating too much back pressure.