I hope GBResto gets back to me. I think I've now crossed that line where pinball has become an obsession.
I've decided to get my old GTB Pro Football (1973) pinball to mint condition. That means replacing my 8/10 back glass with a new one. It also means that there will be a playfield heading to APR at some point.
I'll never get my money back on that game, but it has sentimental value to me. There are a lot worse ways in life to waist your money.
(I'm even now thinking of operating a single machine - I'm applying a count down for that decision before deciding to GO for it)