D40 wall box plays wrong record.

[ldj1002]

I have a AMI D40 juke box with a 40 select wall and a stepper. I replaced the 100 Mfd. 50 volt cap in the stepper. I also cleaned all contacts in the wall box and stepper and oiled them good. Everything is clean and moves free. I can make a selection from the wall box and it will play but not the selection I selected. I can make several more selections and again not the ones I selected are played. Those selections aren't off from what I selected by the same number. I go back and select the selections again and again they don't play the right selection and what it plays isn't what it played before. IE for example I select 5 and it may play11. I select 5 again and it may play 20. Actually it is as if it has a mind of it's own. Any help to make it play right selection appreciated.