Just a little heads up, i have gotten around to testing the contacts with a voltmeter a few weeks ago, and the readings are fine and were they should be, but we discovered that the nipple of the Duracell AA batteries doesn't sit as well in the groove as the German equivalent does and seeing as the contact pin on the body had been stuck prior to cleaning, the spring behind it probably isn't as responsive as it used to be. I would have never thought to check this as i had assumed all AA batteries were the same. This might have been the Problem, as i have a film in it right now i haven't gotten around to testing it in AF mode but i'm optimistic that this change might have made all the difference.
thanks again for all your help way back when, i know i took ages