Just picked up an F-14 Tomcat. Machine powers, no errors, can do all the tests, adds credits, but when I depress the start button, I get what seems to be ball hunting. Game doesn't start, but 2-3 coils activate trying to kick loose a ball. I have all 4 balls in the kickout ready to launch. Tested switches, all seem to be working as expected, but no startie/startie. Any ideas?