1) I am using an adamant Munna synchronizer who is in my lead slot. My TID is 07898, RNG reporter likes to leave out zeros if they lead a number.Two things jump to my mind which could cause the problem.
1) What synchronizer do you use? (What nature. I doubt this will be the problem. Just to make sure.) Your trainer ID is 07898, right?
2) The spot where you Sweet Scent are there any wild double battles? I RNGed also some wild Pokemon in my White and it seems really high grass where you encounter 2 Pokemon at the same time lead to other PIDs.
2) I'm in the chargestone cave which I don't think has wild double battles.
I'm not sure what's going on because I'm encountering the correct ivs but I can't explain the pokemon I'm encounter.