So I'm giving Roaming RNG another shot. This time, it's been consistant that I've hit 8/31/31/31/26/31. Not the IVs I'm supposed to hit. Here's my seed: 70B623A3E52A0977 or 70B623A3. Now apparently, when I look at the IVs I got when typing them in PO, it's on frame 8.
But the seed I'm supposed to hit is on frame 10. I know that the starting frame for non C gear is 1, I have 4 Pokemon in my party so I use Max Repel + 6 steps to advance my frame to 9. I also know that Roamers advance the frame by 1, which = 10. Basically all I do is advance 8 frames, while starting frame and roamers add to your frames. I don't understand what I'm doing wrong. I also heard the the rain changes the PIDRNG? I don't get this at all. Has anyone RNGed the roamers to understand what I'm doing wrong or people who know what I'm doing wrong?
Oh, by the way, after I encounter Thundurus outside of the house. I go to Route 16 to catch it.