Still getting some ricocheting effect, which could be due to not having a fillet transition from the flared opening into the corkscrew. It makes the loop about half the time, but it may be less than that when trying to aim for it with a flipper (I should temporarily mount it and try). I think I'm going to make some tweaks and print another one tomorrow. I think the roughness of the print may be slowing the ball down too, which could be easily remedied by adding a strip of steel that follows the path all the way through. to smooth it out.