I agree with the overwhelming part.
Years ago I would read till I could not understand anymore. I would go to bed, wake up feeling refreshed, and sometimes read the same thing again, still trying to wrap my head around it. Sometimes after days and days of reading and trying new search words, things would start to make sense.
The great thing about Cummins engines is they are the most talked about, and most tweaked engine on the internet.
Many many sites are dedicated to just that engine alone.
Everything else on a bus is just more parts. Break them down individually and start the searching. In time it will all make sense.
Sometimes the research and leaning is the best, least messy part.
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization