Hello all, I am a newbie here trying to work on some old cranes left over from a arcade I was involved in over 20 years ago, not a machine tech by any means. I have a Big Choice that worked perfectly until I cleaned everything, now the carriage wheels just spin and it does not return home. May have made a mistake using light machine oil during the cleaning. Any suggestions on how to remedy. Also, marque lights do not work, would appreciate any help

