Thanks for the welcome. In 2015 I had EGR cooler failure so I Bulletproofed the EGR cooler and installed Sinister coolant filter. At the same time the engine was pulled as well to replace the secondary bed plate seal. And with the engine out and apart, every seal, gasket and component that could be upgraded was, with the exception of the studs. Total cost was about $7k for all the work. I don't stress the engine the way other users have who've experienced stud failure, so I didn't see the need to go that route, replacing the studs. I've driven 40,000 miles since then and haven't had any issues related to those repairs, and the master diesel tech who services this rig is pleased with how it's running now, so I think I made a reasonable decision back then.