In my experience these issues with OCR are unavoidable. If you have frequent issues with certain characters you could replace them with a regex string replacement, but unfortunately to do proper context sensitive spelling and grammatical corrections in combination with OCR would have to be invested at the scanning end, or you would have to find a third party plugin with reactively corrects this.
What I've seen more of is words like MEMO translating to "M EM 0". Spinning your own if/else helpers for the common occurrences are probably the fastest way from the receiving end unless someone knows of a better way... :) -Tres
