About 10 years ago I purchased a parts camera to fix up my original FX-2. It turned out that the one I bought for parts was in better shape so I used the parts from my old camera instead. I then realized that I could have purchased a much better working model (there are plenty of cameras out there that have been gently used) and bought two of them.
My point is, don't bother fixing them unless it is a hobby you enjoy. (Sorry it took so long to actually make my point.<g>)
It occurs to me that I'd better go work those shutters again!