Ok, now I get it.
Thanks, tclederman.
You see, I know very little about mechanical work. But to me working on these old trucks is just as much fun as driving them, sweat and beeding knuckles notwithstanding.
That's why I am trying to gather as much professional advice and information as I can get. And trying also to get to know this rust bucket inside out, or at least, to know about it as much as possible.
As always, I appreciate and welcome any advice you guys can give me.
Charlie