Stat numbers will only go up when a level is gained, I start with my pokemon im training, holding the correct item, then I quickly switch to a lv100 and 1HKO it, the ev go on even if you can see them.
Ok then the only thing i need to make a fully good gym team is an Abra since i need a way to deal with them fighting types (namly things like your Conkeldurs) since they sweep me almost half the time so if you could help it would be really helpfull anyway i'm going to be Afk for a bit since i need to start EVing my new Tynamo.