Hello... The problem is big

I did try many values for fixed line spacing and none of them worked.

Before conversion (notice the symbol not showing in the red box): http://i43.tinypic.com/eu2d1u.png
After conversion: http://i41.tinypic.com/33y03ys.png

There are too many files like that and they were all converted from PDF.

There are also images in the document and when converted this happens http://i39.tinypic.com/11ade1g.png

(The text goes over the image)

Also, the headers and footers get disconfigured and start to appear in the middle of the sheets. One thing that could work is to simply delete all headers and footers before converting the font (how do you do that? I have tried deleting them but I can only do one at once)

I guess my main interest would be to just delete all headers and footers at once, make the text not go over the image (make the image be like part of the text) and then delete all page breaks, line breaks, etc (I already know how to do the latter).

I am willing to pay if you can help me.

Thank you!