Something has changed recently. Ones are regularly taking out fives and sixes. I have never once seen 20 even come close to blowing up a 70, yet 2 takes out a 7 all the time.
there is no question you guys have done something, and it's terrible. I have never in my life been one to leave a bad review or customer complaint but if this doesn't change I will quit this game and never make another purchase again. Fix your algorithms.