Free Balls! Winning the Jackpots on Monster Drop, over 1100 Tickets!

I play some Monster Drop at Cherry Hill Lanes North in Clarkston Michigan. I won some jackpots and ended up winning quite a lot of tickets. While playing I also noticed something. The green and blue ball is slightly smaller than the others and whenever it's the next ball to be dropped, it tends to slide past the stopper, not enough room for it to drop though. When a few of the others balls load up on it, they push the blue and green ball enough to let it slide past the stopper giving me a free ball which occurred a few times as seen in the video! Definitely was cool figuring out a little trick to a couple "free plays"