Occasionally I find during a game that a ball has stayed in the under play field Orb release ramp messing up that game (normally one of my better scoring games of course). When I manually test all combinations of extra balls with the play field glass off it always works perfectly. I'm wondering if it's caused by a ball being knocked back into the shooter lane, which in turn collides with a ball just emerging from the under playfield ramp and knocking that ball back into the Orb under playfield ramp. It's not something that you're going to notice as when you have a multiball you tend to be too busy with the flippers to notice. So all you Centaur owners out there, do you have a similar problem, is there any adjustments that can be made to help?
I'm even considering wiring a switch to the Orb kick to playfield solenoid so that I can trigger it manually and release the stuck ball back into play and continue the game!