Accessorizing Bertha

[Joseph Tainter]

Bertha now has a Berlebach 2042 to keep her steady. With the center 
column extended, the Berlebach is supposed to reach to 64.5 inches 
(sorry, metric folks, but it's been a long day and I am too tired to 
convert). Yet when I set it up and extend the column, it comes to at 
least 71-72 inches.

Can anyone figure out why?
Thanks,

Joe