PDF custom zoom

[sajmon5544]

Hello, I'm trying to read some manuals and other pdf stuff on my kindle 3, but even in horizontal mode characters are pretty small
Built-in zoom function is of poor functionality, when i pick one of options available (like 150%), selection square is too small to cover whole line width.

I just got that idea, i could specify zoom procent, for example 163% i could cover whole line width and just cut off margins (which tends to be broad, like 2cm each side) - after that i would get edge to edge text, readable and without any horizontal scrolling.

Questions is, did someone thought about it (like in custom software) or maybe You know other tricks to make A4 pdf more readable (w/o conversion)?