Could be metal or dried pcs of lube? You were fortunate to get the lens unscrewed. I usually have to soak them for a few days in 99% rubbing alcohol, not the 91% stuff. Every tiny little bit of the dried lube has to be removed, then a very small drop your choice of lube. I assume you marked the threads on the helicoil threads so you can start them at the same place? If not, you're in for some fun.
You can ck the bellow for pin holes by taking the camera into a closet, closing the door, and shining a light inside the bellows. Or taking the camera outside on a sunny day w/ the back open, putting it tight against your eye, and seeing if you have a small light show, or a cave.
You can ck the bellow for pin holes by taking the camera into a closet, closing the door, and shining a light inside the bellows. Or taking the camera outside on a sunny day w/ the back open, putting it tight against your eye, and seeing if you have a small light show, or a cave.
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