Funny sometimes how mistakes lead the way to a better result. Two cases in point this week. I had loaded some Bergger 200 in a Grafmatic over a week ago. Out shooting, I forgot and thought I had loaded FP4. I usually shoot this at 100, and BPF at 160. When it occurred to me that this was not the case (as evidenced by the unopened box of FP4) I was near panic. Looking at the massive dev chart, I found a comparable for ID11 @ 80. A little adjustment, and I am impressed with the performance. These were informal portraits, and the general density and definition of the outdoor subjects was superb. Something to be repeated. I read some weeks back about someone who had inadvertantly left their Efke 25 in an 30 minute stand process with Rodinal. I liked the look of the prints they posted from the negs, and duplicated the process. This resulted in perhaps the best looking negs I have gotten to date from the 25. So mistakes can lead down positive paths. What similar stories do some or you have?