Thank you very much for making these tests and putting together this video -- it encourages me to take another whack at it. I started using OA back around 2014, and found it a sometimes maddening developer -- it often did not come close to meeting the nominal film speed, seeming to demand significant additional exposure. In one instance, the emulsion fell off in strips. But at other times, it came across with negatives that could produce nice images (IMHO) -- see attachments. I have always thought that OA is very sensitive to any hint of contamination or improper handling/technique. I don't feel it's a do-all sort of developer like Microdot or D-76, which are flexible via dilution etc. You have to meet OA on its own terms -- if you do, and the OA is feeling nice that day, some good images can result.