Hi Mark - sorry I just realized I had posted the curves in the wrong thread. Thanks for moving it over here. After I ran the test with D-76 I thought it would be a good idea to try it again with DDX, if for no other reason than DDX is probably the most consistent developer I've ever used, and also gives fairly straight curves with TMX100, Delta 100 etc. So I figured more data is usually better.
It is indeed a strange shape for TMAX, but not one that would bother me too much as a user.