I use 130 paper developer from PF, diluted 1:1. I developed the paper for 3 minutes because the image did not start to show up until about 1 minute. The grade 4 turned grey. The grade 3 paper, while not as bad as the grade 4, had a shade of grey on it. I have been using this developer/development time on Ilford and Oriental papers for a few months and have never had this problem.

Which grades do you guys use?

B&H did not have Cachet papers in stock. I bought them from Freestyle and they took them back and refunded me promptly. Great service.