This week I've bought a roll of Supra Endura VC. I've tried it in Tetenal minilab chemistry at room temperature. The result is mottled and black is not right. I've located and bought Kodak RT/LU developer and the result at 25C (120 seconds) is the same - ugly mottle. I've tried developing for 180s - seems to look a bit better but still ugly. Some old Supra III is fine in the same chemistry. Its somewhat fogged but no mottle. I use vinegar stop and somewhat questionable bleach but it works fine with Supra III though.