hi, I recently found a box of ID11 which I had bought back in the early 80s. I'm planning to use it diluted at 1+1 to develop a few rolls of FP4 and HP5 films. Does anybody have experience using past EOL film developers? I'm hoping for adjusted developing times, to replace ILFORD's recommendations of 11 and 12 minutes for FP4 and HP5 respectively. Thanks.