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One's skill is never complete, one's knowledge is forever lacking, one's taste is invariably altered, one's opinion ever subject to controversy. There is a complete and constant urge toward improvement...
-Andrew Loomis.
"Good Judgement comes from experience. Experience comes from bad judgement."
It's a nice article, all the more so since repair articles on Kiev 4 are not easy to find on the Net.
Still those with "two left thumbs" might want to start with something easier, e.g. FEDs or the like.
My own experiences with my FED 2 are described here: http://hrtranslations.com/photo/photo.html
Look under "FED2: an essay".