1. One of your Lock optos is out, or registering as closed, making the game believe there's a ball there. Switch test will lead you in the right direction there.
2. As LTG says, the second flip is programmed into the ROM - unless a switch is hit relatively quickly after the first 'dump', the software will dump it again in case the ball wasn't seated properly in the bridge cage. For the growling, adjustment is needed. Search here on Pinside for Bridge Diverter sticking, and you'll come across several posts with different things to try. (From adjusting the coil, to adjusting the connecting rod - it can be several things causing it to 'stick')