Edit: By what looks like sheer dumb luck I've managed to RNG a 31/00/31/31/31/31 Modest Kyogre. Fortune favours the brave I guess. Would still like some clarity on this as I have no idea how I managed to do it.
Edit2: Solved
An attempt at comparing situations, last night, I RNGed the Kyogre I want, similar to Groudon, test out first for delays, and found that one came up two times. The other might've been bad math, so I stuck with the consistent delay and it worked.
I have to keep track of RNGed stuff too. I had trouble remembering what natures I caught for Rayquaza and Kyurem for example.