So grahama89
"the others"
What about the outdrive Hub set screws?
the countersunk motor mount plate screws?
Diff screws?
Screws that hold the Knuckles to the C-hub?
Center diff posts?
Etc, etc,
all the places where a locking washer can't be used?
How do you keep all those from falling out?

Nothing like investing in good tools and good quality screws to make a good mechanic