Rate this post by selecting a number. 1 is the worst and 5 is the best.

Author Message   Thepurush Tinkerer Username: Thepurush Post Number: 76 Registered: 01-2012 Rating: N/A Votes: 0 Posted on Saturday, March 09, 2013 - 08:56 am:    Well if it is really grease/oil, the best way is to remove all glass and clean the aperture blades by pouring in some lighter fluid. The blade assembly is much difficult to work with if dismantled fully. The blades are too delicate and likely to get damaged and any corrective action is next to imposible. Shutters and aperture blades r meant to work without lubrication.