I did a film test putting my home built densometer to use. [Seems to work just fine] Here is the problem. I've been using the motorbase since I got it but of course today I forgot to cut my time down. The zone VIII number is much higher then it should be [1.742] which I think shows over development. Makes sense since I should have used 17 minutes and not 20. Getting to my question is the zone I info valid? The test shows I've got a personal EI of 64. .11 over base fog. I think I should be okay since in the Ansel system of testing you first do Zone I and then do separte tests for Zone VIII.