Quoted from chickenscratch:main issues I dealt with: the shooter loop often not completely off of the manual plunge and the ball draining down an outlane, after the ball came up through the inlane. I couldn't even post swap, and definitely couldn't cradle two balls and post swap one, without the balls draining down the outlane.
#1 Takes some effort to get that working right. Research in the owners thread, it's a common complaint.
#2 Easy fix. Game wasn't steep enough.