Originally posted by Jie Li Thanks guys, here is an update with more tests (Alex maybe interested, I will update the image soon)
After 3 more test (test #3 #4 #5),I think the problem is from agitation. But I cannot tell it is bleach or first development issue.
Yes, would love to see the tests, but based on what you described, I would now say the problem is caused by too much or too aggressive bleach agitation. The base on and near the sprocket holes is completely bleached leaving the mid section with what appears to be fog, but is really just your base layer.
There are just so many other factors that could contribute to it such as the amount of flashing, the strength of the second developer, and even the timing of the fixer removing too much or too little silver. You almost got a solarized print effect in one of your earlier attempts which would indicate premature flashing during development.
Reversal processing by hand is very demanding ESPECIALLY when using a film not designed for reversal. I had my students do this for a couple years but the failure rate was too high and too frustrating for most students and even I had an unacceptable quality doing it. For me, the common problem was caused by ph shock. Non reversal emulsions can't handle the big ph changes between chems and I knew I was trying to do something that although possible, the film was not designed to be processed in that way for those results.
Unless you're taking very good notes on the timing and technique on each step, you may want to video your trials so you can take notes later?