The part that I'm missing is how the rng reporter checks the IVs with the built in IV checker if I can't connect to the computer with my old DS (only with my 3DS). (Don't worry I do read through all of your posts every time, I don't skip bits. ♥) I thought maybe the built in IV checker is something that requires the .pkm file to work, but if it's basically the same as the serebii IV Calculator then this old-DS problem doesn't apply. However, isn't it better to determine the exact IVs, and not just a range of IVs? I don't really have a quick and dirty way of leveling what I catch up to level 100 to narrow down the range of IVs properly. So I guess my question is whether switching between a DS and a 3DS would interrupt/disrupt the parameter finding process, since I think I should be able to figure exact IVs through ir-gts... though it seems that you answered this question for me, so thank you!! XD