Sounds they some of the owners of these sited machines do not give a shit about the machines,it is all about money,and not a lot of it if the machines are not up to scratch.How things have changed from when we operated an amusement centre in the late 80s till early 90s.We allways had around 10 pins and various other arcade games.On the same day of each week the owner of the machines would come in before we opened,empty the cash,give us our half.Then his pin teck would go over every machine,clean,repair where required,everything was checked.If i had a machine that had to be put out of order before his next visit ,all it took was a phone call to the teck and he would be there that day or the next.This was the same deal with a guy who owned a jukebox we had on site.I know i would not be the only one on this site,but i always have my machines cleaned and waxed as it makes gameplay so much better.