it's amazing how much space a space can take. The average writer writes words with an average 4.5 characters in length, so if you write a 1000 word essay and double space you average 6.5 characters instead of 5.5 characters per word with a space. That's 6500 characters vs. 5500 characters...a big difference.
Sorry...I had lots of problems cutting mine down too. I even noticed that hitting enter on the personal statement box was equivalent to 2 characters, so I ended up combining a couple paragraphs.