Alright, these teams actually have pretty solid breaking cores. Specs is a good idea on Toxtricity. However, you absolutely NEED an electric immunity. Regieleki, Tapu Koko, and really any Volt Switcher currently wreaks havoc on your team. I'd make heatran Flame Body Physdef and replace Clefable for spdef Lando-T or SD garchomp.
https://pokepast.es/afe1e052cdcf3206
https://pokepast.es/e66a54cd4b49ac0a