Hehe, never know when those pumpkaboo will pop up once the sun goes down.
I know the feeling. I have two perfect breeding pokemon that keep pumping out nice 5IVs each time, but the region is the same so the chance of it being shiny is the normal odds. There's also the catch that even if the pokemon has the region tag in the summary, if it was hatched by someone in another region that's the same locale as yours then it doesn't count for masuda.
Example: I have a german Ralts I hatched. I'm from England so if i breed it with an english pokemon, despite it having the german tag, it's counted as an english pokemon meaning the MM is voided. It's becoming more tricky to get pokemon who are actually from the other regions! The easiest is with JP or Kor, since those will have noticeably different OTs. I'd have to double check on that but that seems to be the case at the moment and it's being tested (myself included) and looks to be true until someone can datamine and confirm.