I had to go 1-2 as an average. There are times I lose 3 or 4 in a round, and then, like right now, I've played the same ball for the last 10 rounds, the logo is actually wearing off, but the ball keeps going in the hole, so why change it.
That's my common miss. For me, its the right shoulder not turning enough or lagging back a bit. One thing that helps me is pretending I'm slamming a door closed. That motion really involves the whole right side. Best of luck.