It may seem perverse, given the need to twiddle throughout the dev time, but I don't like dev times under 5 minutes. Variations in load & dump times for the chems have too great an effect. So I'll probably go with #HC110E for #Kentmere200 next time. If nominal 5:30 looks good for dilution B I'd guess at 8:15 for E, which I think is around what @tomnorthfilm was thinking. 3/2 (Yeah, think ahead, Chris!)