Hi folks i have a puzzle ,when sling shots are hit they should score 1 but that only happens every ninth time they are hit ,the other eight times they they score eleven .What causes this. One more should the R relay hold switch stay locked on the whole time machine is powered.

Thanks ArgosySK ill go have a look

Thanks ArgosySK fixed the problem the switch arrangements were different than the one shown, i pulled the 4 reels out and compared them all in different positions and made slight adjustment ,thanks again for pointing me in the rite position.