Unfortunately, I do not have my FX-37 formula with me right now. It was one published shortly after that developer was announced, and, as I recall, was similar to what has been shown and referenced here. I've used FX-37 a fair number of times for both TMX and TX. It has always produced outstanding results. I wish there was more information on developing times available, however. FX-37 is pretty complicated to mix, so I generally favor the simpler D-76. FX-37 may give slightly superior results, especially in the sharpness department.