Hello! This is probably an easy question but I am new to the hobby and did not see the information in my owners manual. I have a few lights on my playfield that do not work, even with new bulbs. If I swap a working light and socket into the one that does not work, it works. So I am looking for 6 or so replacement sockets but I am not sure which ones. I have seen some listed that look right but there are different sizes. Any help would be appreciated.