I have a Cavalier 72 that I continue to have issues with vending. It will vend fine for a while and then the coins just drop through the coin mech. I test the wiring by bypassing the coin mech with a hard wire to pin #1 and #3 and it will vend without a problem. I assume the issue is with the coin mech so I get another one (on eBay that "say's" tested) and again it will work for a while, but then stops with the same issue. I then do the pin #1 and #3 test and it vends no problem. So I am not really sure what is going on. Maybe I am just getting some bad coin mechs. Then I thought I would just set it up for free vend and I see the postings on how to make one, but I also see Free Vend Micro Switch on Funtronics (
https://www.fun-tronicsllc.com/product/free-vend-micro-switch/) that says for models with electric coin changers, but confused how that works. It says mounts behind the door and activated by the bent coin return? Will this switch work with a CAV72 and if so how do you actually install it? Any help/advice would be greatly appreciated.