Well... I'm now the happy owner of a second F1, which is great. The camera triggers, kind of works save a few functionalities (self timer is almost gummed, aperture preview does not reopen fully, etc)
Good news are the top cover is indeed compatible (except the "decoration" below the speed dial is not the same, so I have to use it with the cover, but it's no big deal)
Bad news are... when replacing the shutter lock mechanism, I damaged the spring that actuates the detent ball... At the moment I'm using a piece of gaffer tape to keep the shutter unlocked, but I'd like to replace the spring.
And since the donor camera is missing this spring and the steel ball, I'm on the market for two springs and one ball...
I cannot find the spring size, so if somebody could tell me what to look for, I'd be very happy (and if you have a good source for these it would be even better)
Thanks!