I restored my Firepower about a year ago. A lot of pins have come and gone over the years but Firepower is staying. I found mine in a basement near Chicago. It had been in that home since 1985. It was dirty and had not been maintained but it has also not been played. The board was in bad shape but playfield, cabinet, and backglass were in exceptional condition. But, you could not tell by all the mildew, dust, and gunk. I put in a rottendog and then replaced the front targets, fixed some very amateur wiring attempts, and replaced a couple cooked coils but the machine came out great. I put in some LED's behind the glass and it really shines.
Every time the thought to sell it crosses my mind, all I have to do is walk down and play it. The design is so fun to play and the machine is so fast, a lot of other machines will pass through my collection before it goes.