Just came across this old thread and really enjoyed reading through it some great stories in there worth a look if you haven't seen it (one member used cooking oil to try to give his playfield a nice shine).
My first machine solar city a $1600 dollar eBay purchase 6 or 7 years back that started or at least rekindled an obsession.....wish I never sold that game and not sure why I did but I made a $250 profit from it so not all bad.