I just worked on one for a guy! Brought it back from the dead... really fun pinball.
There's really nothing badly designed on it that I saw, it's just a standard Bally, if you can fix or are familiar with the Ballys, you won't have any problems. The only difference between it and something like Mata Hari is there is a special "auxilary light" board, that is nothing more than a smaller version of the regular, well designed light board in these. I think I replaced one scr and that was it. Also the sound board has speech, so that wasn't working but after recapping it and putting a new 6821 PIA on it, it worked great too.
Fun game.