did you change the percentages?

it seems that even on questions with large amounts of money placed on them the percentages now change alot based on what you wager compared to just a couple of days ago...for instance, i placed a H$1000 wager on the dow jones question for today and it went from like 18% to 99%....while i agree that it has been fairly easy to make large amounts of cash, it seems that a market with more money on it shouldn't fluctuate so much....are you just tweaking the formula for deciding the percentage changes? cause while i agree that it probably should have been changed, it seems to have gone way out of whack