Have an oddball issue on my Space Station. When a ball is docked to the right and then the lower pop bumper is activated it kicks the locked ball out. In switch test all of the associated switches register fine separately so it doesn't seem to be an issue of the pop bumper activating a sensitive switch. It's very consistent and only the lower pop bumper that does it when a ball is locked to the right. Sounds to me like something on the board but having trouble tracing where to look. Any ideas?