Passerby

Great game, but is there any way to fix pokemon iv or natures in the game? It's really hard to get mons with the right iv + the right nature because the majority are one of a kind due to no breeding mechanics in the game. So it becomes pretty impossible to try to soft-reset farm good iv because to even check the iv you need to catch the pokemon first, create a seperate save file before catching so that you can use a replacement if the mons has bad stats, and then need to use pkhex to check the mon's stats to see if they are decent enough or not. And since pkhex doesn't work with custom games like xg, is there any way in the game itself to fix up bad ivs of a mon?