I just got out of the darkroom after using F-130 for the first time (photographer's formulary version of Ansco 130). I made a print on polymax II RC. I wanted cooler tones and I thought using Ilford MG-cooltone would give the effect I am looking for, but the result looks like the cooltone is decidedly warmer than the polymax II RC.
The developer was mixed around 4 hours earlier and the working solution is diluted 1:1. I am developing for 50 seconds with both paper, the filtration grade is the same for with both papers (there is a slight difference in contrast which I will compensate for in the final print). Other chemicals in the process are Sprint Rapid Fixer (1:4) and Kodak stop bath.
Any suggestions on what I may be doing wrong, what I could use, why I see this behavior would be very welcome!