[welshy59]

Originally Posted by Fat Cereza

In the main window, right below where you specify the encounter time, you need to change tell the Reporter you'll use a pokemon with the synchronize ability as your lead, and not only that, but said lead must have a bold nature.

With that said, you'll need said lead pokemon on your party to get the suicune you want

I didn't realise that a Synchronize lead affected IVs too. Thanks!