I was hoping someone with more tinkering experience than I could be generous enough to give me a few tips. I have a nikkor 35-70mm, the one with the constant 2,8 aperture. A fantastic lens, I used it with my aging f90x and later d70. Sadly, something has broken inside it; both zoom and focus is jammed stuck. I tried to have it mended professionaly a few years back, but I only recieved it unrepaired with a sour message that spare parts were no longer available, and a bill for good measure. It seemed they didn't even bothered to open it. I have kept the lens regardless, and recently aquired a set of precision screwdriwers and the servicemanual for the lens. Before I attack the lens in my usual overzealous way, I was thinking that I should have something of a plan. I am hoping to find a screw out place that can put back in its place or replaced, but I realise of course the problem can be more complicated. Anyone out there that can come with some much needed advice? Thanks!