I'm not gonna lie, I'm not a math person but the IV calculator on Serebii is looking like a nightmare! If you are still interested in the gastly maybe you are better at figuring them out than I am? Its 15/15/32/11/26. If you aren't interested in it I have others and I'm just reading off a few randoms because I don't remember which shinies you have listed on your thread but I have a shiny timid UT lvl 22 drifloon, shiny Modest lvl 5 Minun, and a shiny timid UT lvl 21 Marill.