Update... I've played hundreds of nickels now with NO jams! So far so good. Waiting for to hit the three bars and see if the jackpot works. I know I can manually set a win situation but I just want to hit it the "real" way. When I first started playing, I saw the jackpot fill. After that I heard the upper jackpot fill and now I just hear the coin tube fill or, when it's full, I heard coins falling in the coin box.
I just realized I already said this in my last post. But ... it's all still doing that!