It has been ages since I last came and met you. I will not tell you the list of problems which prevented me from joining you here, but these are over (I Hope)
Lately a French friend of mine came and visit me while I was tuning and explaining to an Italian student how to turn an off centre spike. My friend is sure not a good film operator, but he produced the following
http://www.youtube.com/watch?v=4xto6-OEunc