Back to the 30mm. The lens has arrived in the meantime and I found that you were right regarding its incompatibility with an older 1000F.
My russian lens is written "CCCP" on it, and it is called 30 DIAK - 8 3,5/30. I just return from my workshop, where I adapted the lens. The main problem is not a pin, but the thread in the russian camera must be nearer the camera front. So I transformed the lens bajonet (or thread..) so that the lens fits deeper into the camera housing. After several shy trials the lens fitted in correct horizontal position. Then I just had to remove the arresting pin, which makes normally the lens stop at its correct position, as this pin is not exactly in the right place. But the lens is firm also without this pin. The last and probably unnecessary operation was the removal of the pin, which operates the diaphragm - given that the camera has such a device. This is also quite easy, and I think that it would not even be necessary.
Now I'm leaving for taking some pictures out in a beautiful harvest. I'll write more as soon as I have some results,
saludos