I printed 10 Pt/Pd prints today. Same exposure time. Same drop schedule. Same paper. Same developer. A few of them came out pretty flat. They look like there wasn't enough sensitizer on the paper. The common denominator for the 4 bad ones is the time between coating and printing. I think I rushed it. I don't have a print/paper dryer so I put them in a light tight paper storage box and put that in my vehicle (It's hot here) for a few hours. The problem with that is that the sheets aren't separated and they don't dry very fast. They felt damp but I elected to expose them anyway I need to put the dollars per in^2 for a pt/pd print in big letters somewhere...

Here's a scan one of the 4 images