hrst: thank you for your response and good advise. I think you are right, when these "flakes" started all over again I thought it would be reasonable to contact both Kodak and Tetenal, since I think I have done everything very carefully, save not using distilled water when mixing the chemicals. No doubt, it would be quite interesting to hear what they have to say and what's the problem,
BTW, I have just uploaded in the Standard Gallery 4 picture (The bridge, 2, 4, 5, 6 nov.) from these "flake" negatives; it's only the negative showing picture from nov 5 that's free from flakes, and I haven't in any way corrected for the "flakes" in these pictures, in other pictures with great light and even surfaces one can sometimes really see the problem in the scan.