This guy known as Supershotbattymambo has made some awesome vidoes of his vintage slot machine collection on YouTube. I found his video of the Brenco Wheel of Fortune great, particular his win predictions. I had a similar scam playing on the machine when they went to 1NP in the 70's. He has lots of videos of his machines and they are very intuitive with great commentary.I recommend if you haven't seen them before heading over and subscribing to him. Always good when he gets something new to show. I particular found the 'tuck shop' video funny, trying to win a packet of pockets you find yourself willing him on through the video
What a genius he is, keep on slotting mr Supershot.
p.s. check out the demonstrated little cheat on the Wonders Win and Place allwin: