I tried to CS reverse a few times last summer with very little luck. First I started spraying too late into flower, if you are getting any pistols out the ends at all, you might have missed your window of opportunity, you really need to start spraying, in my experience, right when you see the first hairs where the branches meet the main stem, and keep spraying until pollen flies. I had one plant last year that had tons of sacks, hundreds litterally, but I quit spraying after it looked totally male and I never did get any pollen off that plant, sucked a lot. Right now Im trying to do a STS reversal. Sprayed twice now and it seems to be having little effect. Mixing .1g silver with .5g TS / 1 liter distilled water. If I dont see any progress by next week, I will spray again, maybe twice a couple hours apart. Someone mentioned that with both STS and CS, its better to spray at or during the dark period, as light can mess up the chemicals, not sure how true that is, but Im trying spraying and leaving the plant in the dark for 2 hours before I turn the light on again.