ok… got SERIOUSLY annoyed by the problem 
so I took the fub25 and fixed all the numbers…
It would be nice if you could make them u8glib compatible in format and create a "numbers" version frim it, or at least a restricted.
All Numbers are now aligned on line -1 and have exactly 26 pixels in height… so 25 is the upper line… it is not pretty but a lot pretier than before.
http://uschok.de/~doommaster/fub25.bdf
I will create a Numbers only font now… custom… and simple and clean 
will post the file here once it is done
EDIT:
I have also made a numeric font on my own… simple and clean… all numerics are monospaced
http://uschok.de/~doommaster/freedoomr25n.bdf
Feel free to do whatever you want with it… this font is Free in all human and lawful senses.