this particular roll was used in a diana. it seems to be a tendency for fuji films only, even in my lubitel. strange. every time i have developed without a presoak i have had extremely patchy dev. this is the same whether im doing c41, xpro or even black and white. i cant bring myself to ditch the process entirely. i may knock it down from 3 min to 2 x 30sec washes as suggested and see how that goes.