Can't stop beating this horse while it's still twitching :-)

I was curious what my source material for our Andrews truck was, and since the Hathi Trust now has the 1919 CBC on
line, I found the drawing:

https://babel.hathitrust.org/cgi/pt?id=mdp.39015006057858&view=1up&seq=1024

Since everyone wants to compare this to the models of PRR Crown trucks, I then went looking for drawings of them in my 1922 CBC (it loads a lot faster). I was then going to do a side-by-side comparison when I noticed something strange; according to the drawings, the Crown trucks have a 2" longer wheelbase, 5'-10" as opposed to 5'-8". Is this the way they were actually built? If so, of course they look more "masculine". Is this correct, or an error in the drawings presented in the CBC?

Dennis Storzek