Been there, bought that, fixed some and recovered spares from the rest!
Originally Posted by Jon Goodman
The one which particularly got me was the zoom with greasy fingerprints inside. Who on earth dismantles a lens and then puts it back together with fingerprints on the glass? They hadn't even bothered to tighten it all up properly, which at least made it easy for me to take it apart again and do a proper job.
Hint: surgical-type gloves are brilliant for avoiding leaving marks on lens elements while reassembling. Even the cleanest fingertips have natural oils on them, the gloves have nothing providing you make sure the talc is only on the inside.