Breakthrough just in time.
I acquired 25 sheets of grade 5 fiber paper from a friend, and used it in my camera to photograph my negatives, I had the most luck to date with contrast in the positives. the camera is fully functioning and can enlarge a 1inch object to 8X10 sharply. Unfortunately they do not make grade 5 paper anymore as far as i can tell, so I am sensing a lot more experimentation with developers and heat. I think if I find a way to safely heat a very concentrated paper developer, I will be able to bring in enough contrast into the photograph on grade 4 paper, which is still available, to account for the 2000 kelvin difference between the tungsten bulbs in enlargers (which color filters and graded paper are designed for) and daylight. If i can't, hopefully there will be enough contrast that i will be able to over expose and then use a dilute potassium ferricyanide to bleach the whites back in without affecting the rich blacks to much. I will post some pictures of work in progress soon, and there is a show coming up at 1111 8th st, San Francisco.