pretty sure it was changed at one point..i remember reading a news logg though, saying that the spawn rate was increased to the default rate :O..so i guess that theyve already fixed it...
btw doubling the rate would be craaazzehhh..have you been to ciroc's house? he has black gralats in his bushes that are worth 2500+..****ing crazeehh..maybe you need to start a codeshop and trick people into farming for you..its not hard and its the easiest way of income in MO