Thanks all. Lens is working. I used lighter fluid and then alcohol and about a dozen Q-tips to remove the diaphragm oil.
Thought I was being careful but still lost the damn little click stop ball bearing and had to rob a too big one from an old spare parts lens and drill out the hole. Haven't had time to do an optical test yet. Powell > >My super eBay deal $16 Vivitar 28mm F2 arrived this morning. >Not so super. :( > >The diaphragm didn't function. And it has the large light baffle which will >need trimming. Fixing the diaphragm mechanism was easy, a slightly bent >control arm. But it still will not work as the blades are oily. So far I >have access to the blades from the rear and have tried wiping with a Q-tip. > Not very successful. > >So what is the best way to get the aperture blades clean? > >TIA >Powell >
