Ultimately David I aggree with you. I have always really had an Ansel Adams attitude to exposure, developer, thermometers and room temperature and the inclination of ones head, etc.. I have the privelege of being in a small town that still has a community film group which provides a great context for having my own films screened. The town love us which is really nice. I want to keep this group going as long as possible. The group is varied, however, and comprises a lot of non-photographically minded people. Thats why I am looking for a solution to this post k-40 exposure issue. By and large, however, most of the other people in the group won't notice a slight increase in exposure. Its not what they are about. Since I order and buy the stock for the group, however, I would prefer if I could supply something to them that I felt suited what they were doing. But oh well. Another factor here in Australia is that currently there is no E-6 laboratory for movie film lengths. We are used to posting stuff o.s., but we are also used to not paying for the postage! (it being pre-paid with kodachrome) Again, Oh well. I am thinking of home processing the 64t for the group if necessary. At least then I can under develop as required if people's stock needs to be pulled to 40asa. Anyway, I thank you for your response.
Ricahrd T.